Manual.txt Driver File Contents (tel64ta.zip)

digicorp Communications Equipment Ltd.      Manual.txt

				    CCITA
				OPERATING MANUAL
				  rev. 1.0

				 July 1995
				 10DI02012 


				 General Index


	1. GENERAL....................................................4
	   1.1. HOW TO USE THIS MANUAL................................4
	   1.2. DESCRIPTION OF THE PRODUCT............................5
	   1.3. TECNICHAL DESCRIPTION.................................6
		1.3.1. Standards Compatibility........................6
		1.3.2. Mechanical dimension...........................6
		1.3.3. Electrical description.........................6
	   1.4. FUNCTIONAL DESCRIPTION................................8
		1.4.1. Autobaud.......................................8
		1.4.2. V42bis Data Compression (CCITA)................8
		1.4.3. Autologon......................................8

	2. OPERATING DESCRIPTION......................................9
	   2.1. PACKAGE...............................................9
	   2.2. MECHANICAL INSTALLATION...............................9
		2.2.1. How to use CCM configuration program...........9
	   2.3. AT COMMAND SET.......................................11
		2.3.1. AT COMMAND SET DESCRIPTION....................12
	   2.4. V25BIS COMMAND SET...................................23
		2.4.1. Asyncronous V25bis  format....................23
		2.4.2. V25bis command set and messages...............23
		2.4.3. V25bis command set description................24
		2.4.4. V25bis message description....................25
	   2.5. S-registers..........................................26
		2.5.1. S-registers list..............................26
		2.5.2. S-registers description.......................27
	   2.6. FACTORY CONFIGURATIONS...............................30
		2.6.1. Factory Configurations Description............30
	   2.7. AUTO-LOGON OPERATION.................................32
		2.7.1. Auto-Logon control character..................33
	   2.8. HARDWARE OPTIONS.....................................34

	3. DIAGNOSTIC................................................35
	   3.1. DIAGNOSTIC ACTIVATION................................35
	   3.2. LOOP ACTIVATION......................................36
		3.2.1. Local Loop Activation.........................36
		3.2.2. Remote Loop Activation........................36



















       4





       1. GENERAL


       1.1. HOW TO USE THIS MANUAL


       This  operating  manual describes the features of the PCMCIA CCITA 
       Terminal Adapter.
       CCITA (1B+D, V.110, V.120 and V42bis).
       


       1.2. DESCRIPTION OF THE PRODUCT


       The  CCITA card is a TERMINAL ADAPTER to be inserted into a PCMCIA rev
       2.0 socket.
       The TA has been developed to comply with EUROISDN NET 3 interim CTR3
       standard.
       The CCITA is based on two parts: all digital components are present on
       the  PCMCIA card;  the line interface components are contained in the
       external line adapter unit.
       The CCITA allows you to connect to the ISDN network using an
       asynchronous data channel up to 115.2 Kbits/s.
       

       Other features of the  CCITA include:

	    AT command set
	    V25bis command set
	    V42bis data compression
	    Autologon
	    Autobaud
	    4 selectable factory profiles
	    4 selectable user configurations
	    8 stored phone numbers for  AT and V25bis command set
	    Local Loop and Loop 4

       6





       1.3. TECHNICAL DESCRIPTION

       1.3.1. Standards Compatibility
       
       The CCITA complies with the following standards:

	    ISDN
		 ETS 300 012 / I430            layer 1
		 ETS 300 125 / Q920 - Q921     layer 2
		 ETS 300 102 / Q930 - Q931     layer 3

	    SAFETY - PROTECTIONS
		 EN 41003
		 EN 60950
		 ETS 300 047-1
		 ETS 300 047-2
		 ETS 300 047-3

		 EMC
		     EN50082-1
		     EN55022

       1.3.2. Dimensions

       Width                    :    54mm
       Height                   :    5mm
       Depth                    :    85.6mm
       


       1.3.3. Electrical description

       Power requirement

       Consumption                   :    800 mW 
       Supply voltage                :    +5V (from host computer's PC bus)

       Digital interface
       The TA provides a rev 2.0  PCMCIA interface, for programming and
       asynchronous data transfer.
       This interface allows you to use the PCMCIA socket of the PC answering
       to every COMx port of any software terminal emulation (in the package
       there is a disk containing the CCM program to power on and to
       configure the TA, according to the selected COM port).

       Connector                     :    PCMCIA 2.0
       Asynchronous DTE speed        :    300, 1200, 2400, 4800, 9600, 12000,
					  19200, 38400, 57600 and 115200 bit/s

       ISDN interface
       Interface                     :    Bus S 2B+D basic rate access
       Connector                     :    RJ45
       Protocol                      :    EUROISDN


									    7


       Operating temperature

       Operating ambient temperature :    0øC - +45øC
       Storage temperature           :    -20øC - +80øC
       Relative Humidity             :    5% - 92% (non-condensing)


       8





       1.4. FUNCTIONAL DESCRIPTION


       1.4.1. Autobaud

       The TA CCITA automatically detects DTE speeds (up to 115.2 Kbit/s)
       and parity format.
       The valid parity formats are the following:

			     7 bit + even/odd parity
			     7 bit + mark/space parity
			     8 bit no parity

       1.4.2. V42bis Data Compression 

       The CCITA TA  allows you to select (V.120 asynchronous mode only) the 
       data compression  complying  with the CCITT V42bis recommendation, for
       all the DTE speed from 300bit/s to 115.2 Kbit/s.  It is not usual to
       apply data compression on an ISDN network. For this reason a 
       proprietary V42bis protocol was developed in accordance with the 
       V.120 asynchronous mode.


       1.4.3. Autologon

       It is possible to associate a list of options to the stored phone
       numbers,  that  enables specific procedures  (ex:  call  with
       security password).
       These procedures allow authorised access to the system.
       The sequence consists of a number of transmitted and received fields,
       that are limited only by the buffer size (70 chars).


9
 
       2. OPERATING DESCRIPTION


       2.1. PACKAGE
       
       Make sure that the package contains all the following items:

       #    Operating manual
       #    A 3.5" disk containing the user guide & CCM.EXE enabler software
       #    An ISDN cable with 2 RJ45 connectors at each end to connect the
	    terminal adapter to the ISDN network


       2.2. MECHANICAL INSTALLATION

       Insert the CCITA in the PC's PCMCIA slot, connect the external line
       adapter to the CCITA and power on the PC.


       2.2.1. How to use CCM.EXE configuration program

       If the PC provides the drivers to manage the PCMCIA slots (Socket
       Services and Card services), refer to your PC's operating manual
       in order to use these drivers with the CCITA. In the event that the PC
       doesen't provide the drivers you will need to use the CCM
       configuration program on this disk. The CCM configuration
       disk contains two files:

	    README.1ST
	    CCM.EXE

       The README file is a quick guide explaining how to use the CCM.EXE
       configuration program.
       The CCM.EXE file is the software to configure the terminal adapter.
       Starting from the DOS prompt type CCM <ENTER>, without parameters, a
       list of commands, to be used with the program, will be displayed on
       the screen.

       
       DESCRIPTION OF THE CCM COMMANDS
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	COMMAND       DEFAULT   DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       /ON            n/a       power on the termnial adapter
       /OFF           n/a       Powers off the terminal adapter
       /RST           n/a       Resets the terminal adapter
       /Sn            n=1       If the PC has more than one slot, this command
				allows you to change the PCMCIA socket.
				The value of the paramater (n) goes from 1 to
				4.  It depends on the number  of  the  PCMCIA
				sockets available in the PC.
       /COMn          n=x       Allows you to change the COM port.
				The available  communication  ports  are  the
				following:
				     COM1 (3F8 - IRQ4)
				     COM2 (2F8 - IRQ3)
				     COM3 (3E8 - IRQ4)
				     COM4 (2E8 - IRQ3)
       /MEMnnnn HEX   automatic Allows you to change the memory segment in order
				to access to the attribute memory.
				The program automatically looks for the first
				free 4 Kbyte memory segment.
				It is possible to force  the  memory  segment
				inserting the desired value in hexadecimal

       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

       For example if the CCITA is inserted in the PCMCIA socket 1, it is
       necessary to power on the PC and to type:
			      CCM /ON

       If  the CCITA is inserted in the PCMCIA socket 2,   it is necessary to
       specify the socket and type:
			      CCM /ON /S2

       The command to power off the CCITA is the following:
			      CCM /OFF

			      

									   11



       2.3. AT COMMAND SET
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       COMMAND        DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       AT             Attention
       A/             Repeat last command
       A              Answer incoming data call
       D              Dial
       E              Echo commands ON/OFF
       H              Hang up
       I              Interrogate CCITA status
       N              Selct speed connection (V.110 only)
       O              Go on-line
       P              For compatibility
       Q              Return result codes
       S              Retreive and store S-register
       T              For compatibility
       V              Select the return codes type
       X              Select return codes
       Z              Load user configuration
       W              Protocol result codes
       &C             C109 (DCD) control
       &D             C108 (DTR) control
       &F             Load factory profile
       &K             Flow control
       &Q             Asyncronous communications mode
       &S             C107 (DSR) control
       &T             Loop control
       &U             V42bis data compression
       &V             Display active profile
       &W             Store user configuration
       &Y             Define the user configuration to be loaded at power on
       &Z             Store Phone number
       *I             Caller Identification function (CALLER ID)
       *M             MultiSubscriber Number function (MSN)
       *S             Subaddress function
       %A2            CSD call type (V.110 or V.120)
       %A3            Select data channel
       %F             Flash eprom upgrade facility
       %V             Select the command set (AT or V25bis)
       %Z1            Global Reset
       !N1=           Store Caller Identification number (CALLER ID)
       !N2=           Store Multi Subscriber Number (MSN)
       !N3=           Store Subaddress number
       +++            Escape sequence
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

12





       2.3.1. AT COMMAND SET DESCRIPTION


       AT   Attention

	    All the characters following the letters 'AT' are commands. In AT
	    command mode the TA  automatically  detects  the  DTE  speed  and
	    parity  format.  The  TA  will respond using the same speed and
	    parity format of AT command.

	    Store: n/a
	    Default= n/a

       A/   Repeat last command

	    Causes the TA to repeat the  last  AT  command.  This  command  is
	    neither preceded by AT nor followed by CR

	    Store: n/a
	    Default= n/a

       A    Answer incoming data call
	    Causes the TA to go off hook and attempt a handshake in answer
	    mode

	    Store: n/a
	    Default= n/a

       D    Dial
	    Instructs the TA to go off-hook and execute the phone number.
	    D 0-9     Dial the dial string.
	    DS=0-7    Dial the dial string associated to the memory  location
		      (from 0 to 7) stored using  &Z command.

	    Store: n/a
	    Default= n/a

       E    Echo commands ON/OFF
	    Enable or disable echo of commands from the DTE to the TA.
	    E0   Command echo disabled
	    E1   Command echo enabled

	    Store: S14 (bit 1)
	    Default= E1

       H    Hang up
	    Hang up the TA from the ISDN network.
	    H0   Hang up TA from the ISDN network (off-line). This command is
		 accepted only in Escape mode.

	    Store:  n/a
	    Default= n/a

       I    Interrogate product status

	    I0   TA Model.
	    I1   Checksum calculation, the result is displayed in Hexadecimal
		 format.
	    I2   Compare the checksum calculation with the stored value, the
		 response will be OK or ERROR.
	    I3   Revision level.
	    I4   Display Central office.

	    Store:= n/a
	    Default= n/a

       N    Select the speed connection according to V.110 recommandation.
	    If the selected speed is less then the DTE speed, it is necessary
	    to enable the flow control (AT&K command).
	    If the selected speed  is  equal  then  the  DTE  speed,  without
	    wanting  to  use  flow control, enable the "direct mode" feature
	    with AT&Q4 command.
	    ATN command  permit also to enable/disable  the  38400  bit/s.
	    proprietary speed.
	    N0   The speed  is selected using S37 register.
		 If S37 is 0 o 255,  the connection speed is defined from the
		 DTE interface speed.
		 38400 bit/s.  proprietary speed also  is  enabled  with  DTE
		 speed at 38400 bit/s. or S37=50.
	    N1   If S37 have a value of 255,  the speed connection is defined
		 from the TA's connection.
		 If S37 have a value different of 255,  the speed  connection
		 is the highest permitted.
		 38400 bit/s. proprietary speed is disable.

	    Store:  S24 (bit 4)
	    Default= N1

       O    Go On-line from Escape
	    The TA returns in On-line from the Escape status
	    O    Go On-line.

	    Store: n/a
	    Default= n/a

       P    This  command  is  present  only  for  compatibility and does not
	    enable any TA features

       Q    Return codes
	    Enable or disable the return codes from the TA to the DTE.
	    Q0   Messages transmission enabled
	    Q1   Messages transmission disabled
	    Q3   Reserved
	    Q4   Reserved
	    Q5   Reserved

	    Store:  S14 (bit 0,2,4) S52 (bit 0)
	    Default= Q0


       14


	Sr=  Change the  "r" register's contents
	    Sr=xxx    Store the number xxx, in hexadecimal digit,  in the "r"
		      register (from 0 to 255).

	    Store:  n/a
	    Default= n/a

       Sr?  Read the  "r" register's contents

	    Store:  n/a
	    Default=n/a

       T    This  command  is  present  only  for  compatibility and does not
	    enable any CCITA features.

       V    Verbose Mode
	    Select the type of the return code from the TA to the DTE. Can be
	    either short (numerical) or verbose (long).
	    Using  the numeric mode the return codes are followed by the <CR>
	    char.
	    Using the verbose mode the return code are preceded and followed
	    by the  <CR> and  <LF> char.
	    V0   Return codes  displayed in numeric mode
	    V1   Return codes  displayed in verbose mode

	    Store:  S14 (bit 3)
	    Default= V1

       X    Select the TA return code types
	    X0   Enable return codes from 0 to 4
	    X1   Enable all return codes
	    X2   For compatibility
	    X3   For compatibility
	    X4   For compatibility

	    Store:  S24 (bit 3) S22 (bit 4, 5, 6)
	    Default=X1

15


       Following the table including all the result messages in  numeric  and
       verbose mode.

       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
		      NUMERIC        VERBOSE
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
		      0              OK
		      1              CONNECT
		      2              RING
		      3              NO CARRIER
		      4              ERROR
		      6              NO DIALTONE
		      7              BUSY
		      5              CONNECT 1200
		      10             CONNECT 2400
		      11             CONNECT 4800
		      12             CONNECT 9600
		      14             CONNECT 19200
		      28             CONNECT 38400
		      32             CONNECT 48000
		      17             CONNECT 56000
		      18             CONNECT 57600
		      19             CONNECT 64000
		      20             CONNECT 115200
		      40             CARRIER 300
		      46             CARRIER 1200
		      47             CARRIER 2400
		      48             CARRIER 4800
		      49             CARRIER 7200
		      50             CARRIER 9600
		      54             CARRIER 19200
		      56             CARRIER 38400
		      39             CARRIER 48000
		      57             CARRIER 57600
		      59             CARRIER 64000
		      83             PROTOCOL: V120
		      84             PROTOCOL: V110
		      85             PROTOCOL: V120 COMPRESSION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

       W    Protocol result code
	    Enable protocol result code ( see ATX command)
	    W0   Partial result code. When the connection is established, the
		 TA  sends  the connection  message  CONNECT  followed  the
		 interface speed.
	    W1   Complete result code.  When the connection  is  established,
		 the TA send these connection messages:

				    CARRIER xxxx
				   PROTOCOL xxxx
				    CONNECT xxxx

	    This command is connected with the ATV (Verbose Mode) command.

	    Store:  S24 (bit 5, 6)
	    Default= W1



       16





       Z    Load user configuration.
	    Reset the TA and load a user configuration stored in non volatile
	    memory.
	    Z0   Load user configuration n.  0
	    Z1   Load user configuration n.  1
	    Z2   Load user configuration n.  2
	    Z3   Load user configuration n.  3

	    Store:  n/a
	    Default= n/a

       &C   C109 Control
	    Determine  how  the  state  of  the C109 relates to the data call
	    status.
	    &C0  C109 is always ON.
	    &C1  C109 goes ON only when a call is established.

	    Store:  S21  (bit 5)
	    Default=&C0

       &D   C108 Control
	    Determine how the DTR is interpreted by the TA.
	    &D0  C108 is ignored.
	    &D1  If DTR drops while the TA is on-line, the effect is the same
		 as if the escape  sequence is received, forcing the TA into
		 command mode without dropping the connection. When the TA is
		 in off-line status DTR drops are ignored.
	    &D2  DTR  complies with ITU-T C108.2;  while DTR is Off the TA
		 will not answer a call. If DTR drops while the TA is on-line
		 the call is immediately terminated.
	    &D3  Same as AT&D2 except that the transition of the DTR from ON
		 to OFF loads the user configuration from the AT&Y command.

	    Store:  S21  (bit 3, 4)
	    Default= &D0

       &F   Load factory profile
	    Load as active profile the factory profile.
	    &F0  Load as active profile the factory profile 0
	    &F1  Load as active profile the factory profile 1
	    &F2  Load as active profile the factory profile 2
	    &F3  Load as active profile the factory profile 3

	    To have more  details  regarding  the  different  configurations,
	    please refer to the "FACTORY CONFIGURATIONS" chapter.

	    Store:  n/a
	    Default= n/a

17


       &K   DCE Flow control
	    Define the flow control options
	    &K0  NO flow control.
	    &K3  Hardware RTS/CTS flow control
	    &K4  Bi-directional software XON/XOFF (DCE>DTE and DTE>DCE)
		 flow  control.  The  TA  does not transmit to the remote the
		 XON/XOFF chars received from the DTE.
	    &K8  Unidirectional software XON/XOFF (DCE>DTE) flow  control.
		 The  TA  does not recognize the XON/XOFF chars received from
		 the DTE
	    &K12 Bi-directional software XON/XOFF (DCE>DTE and DTE>DCE)
		 flow control.  The TA transmit to the remote the XON/XOFF
		 chars received from the DTE.
	    &K16 Software XON/XOFF DCE<->DCE flow control. (V.110 only). In
		 this  mode  there  is  flow control between local and remote
		 TA. There is no flow control on the DTE interface.
	    &K20 Software XON/XOFF DTE <-> DCE and DCE <-> DCE flow  control.
		 (V.110 only).

	    Store:  S49 (bit 0, 1, 2, 3, 4)
	    Default= &K3

       &Q   Asyncronous communication mode
	    Select the TA asyncronous operating mode.
	    &Q0  Asyncronous mode (buffer enable).
	    &Q4  "Direct mode" (V.110 only).  The DTE <-> DCE interface speed
		 must be the same to the line interface  (see  ATNx  and  S37
		 commands).

	    Store:  S27 (bit 0, 1, 3)
	    Default= Q0

       &S   C107 (DSR) control
	    Establish how the C107 (DSR) will operate.
	    &S0  C107 (DSR) is always ON.
	    &S1  C107 (DSR) function as standard; DSR is ON when the
		 connection is established and will be OFF when the TA
		 hangs-up.

	    Store: S21
	    Default=&S0

       &T   Enable or disable  Loop  test
	    Allow to select the of loop test.
	    &T0  Terminates test modes
	    &T1  Enable local anolog loopback  (loop 3).
	    &T3  Enable  on  the  B1 channel the non transparent logic loop 4
		 (V.110 and  V.120).  To activate  this  test,  follow  these
		 steps:
		 #    Make a connection with a remote TA
		 #    Go in Escape mode with "+++" command
		 #    Send the AT&T3 loop test
		      All  the  data  trasmitted  from  the  remote  TA,  are
		      resended on the line to the local TA

	    Store:  n/a
	    Default=  n/a


       18


       &U   Data compression
	    Select the data compression mode.
	    &U0  Disable data compression.
	    &U1  Enable propietary V42bis data compression.  This command  is
		 only possible when the TA is set in V.120 mode.

	    Store:  S24 (bit 2)
	    Default= &U0

       &V   Display active profile
	    &V0  Display the active profile, the 0 and 1th user configuration
		 and the first 4 stored phone number.
	    &V1  Display  the  second  and third user configuration and every
		 stored phone number.
	    &V2  Display every stored phone number.
	    &V3  Display the supplementary services profile (MSN,  Subaddress
		 ecc..)

	    Store:  n/a
	    Default=n/a

       &W   Store user configuration
	    Store the active configuration to the user memory from 0 to 3.
	    &W0  Store active configuration to user memory 0.
	    &W1  Store active configuration to user memory 1.
	    &W2  Store active configuration to user memory 2.
	    &W3  Store active configuration to user memory 3.

	    Default= n/a

       &Y   Define the user configuration to be loaded at power on.
	    Define what user configuration, stored using the &W command, must
	    be loaded at TA power on.
	    &Y0  Load  the user configuration stored to user memory 0.
	    &Y1  Load  the user configuration stored to user memory 1.
	    &Y2  Load  the user configuration stored to user memory 2.
	    &Y3  Load  the user configuration stored to user memory 3.

	    Store:  yes (NV RAM)
	    Default= &Y0

       &Z   Store a phone number
	    Store a phone number (max length 35 chars) into a memory
	    location from 0 to 7.
	    &Zn=xxx   Store the phone number "xxx" into the "n" memory
		      location.
	    &Zn?      Display the phone number stored into the "n" memory
		      location.

	    Store:  n/a
	    Default= n/a


19



       *I   Caller Identification function (CALLER ID)
	    The CALLER ID function is used to identify the originator  of  an
	    incoming  call.  In  order  for  this  feature to work,  both the
	    originator and the receiver TA must have their CALLER ID  feature
	    enabled.  Enabling  the  CALLER  ID at the originator,  allows the
	    transmission of the originator's telephone number.  Enabling the
	    CALLER ID at the receiver,  allows the caller's telephone number
	    to be displayed on the receiver terminal.
	    The message CALLER ID appears on the screen as follows:
	    RING: nnnn     where "nnnn" is the caller's telephone number

	    *I0  CALLER ID function disable
	    *I1  CALLER ID function enable

	    To insert the CALLER ID number into the TA, please refer to the
	    AT!N1 command.

	    Store: S68 (bit 0)
	    Default= *I0

       *M   MultiSubscriber Number function (MSN)
	    The MultiSubscriber Number permits the association of  maximum  8
	    consecutive  numbers to a BRI access of the national plan number.
	    There is a principal number with the last digit  always  equal  to
	    "0". Associated with it is an auxiliary number that may vary
	    between "1" and "7".
	    The called TA checks the incoming called party number  with  the
	    number  stored  in its memory with the AT!N2 command;  if the two
	    numbers match then it answers the call, otherwise it does not.
	    In order for this feature to work,  the receiving TA must have its
	    MSN feature enabled.

	    *M0  MultiSubscriber number function disable
	    *M1  MultiSubscriber number function enable

	    To  insert  the  MultiSubscriber number into the TA,  please refer
	    to the AT!N2 command.

	    Store:  S69 (bit 1)
	    Default=*M0
20



       *S   Subaddress function
	    The Subaddressing mode allows identification  of 8  TA
	    connected  to  the  same BRI interface for the multinumber.  This
	    feature is managed only by the local  and  remote  TA.  The  ISDN
	    network only allows for the delivery of the subaddress field.
	    The called TA sends telephone number followed the Subaddress field
	    (ATDnnn+sss  where "nnn" is the telephone number and "sss" is the
	    Subaddress field with a maximum of 4 alphanumeric characters) the
	    calling  TA  compares  the  received  Subaddress  to  the  stored
	    Subaddress.
	    If  there's  a  match then it answer the call,  otherwise it does
	    not.
	    In order for this feature to work,  both the originator  and  the
	    receiver TA must have their Subaddress features enabled.

	    *S0  Subaddress function disable
	    *S1  Subaddress function enable

	    To insert the Subaddress field into the TA, please refer to the
	    AT!N3 command.

	    Store:  S70
	    Default=*S0

       %A2  Define the CSD call type
	    Defines the rate adaption protocol to be used on the B channel
	    %A2=1     V.110 protocol
	    %A2=2     V.120 protocol 

	    Store:  S15
	    Default=%A2=1

       %A3  Select Data Channel
	    %A3=2     Preferred B1 channel. If busy, the TA tries to use the B2
		      channel
	    %A3=3     Forced B1 channel. If busy, the TA hangs-up.
	    %A3=4     Preferred B2 channel. If busy, the TA tries to use the B1
		      channel
	    %A3=5     Forced B2 channel. If busy, the TA hangs-up.

	    Store:  S57
	    Default=%A3=2

21


       %V   Select  the command set
	    Define the AT or V25bis command set
	    %V0       AT command set
	    %V1       Asynchronous V25bis command set

	    ATTENTION:
	    Switching  from the AT commands to the asynchronous V25bis commands
	    (%V1),  the data format and their speed remain the same as defined
	    by the last autobaud sent in Hayes mode. If the last autobaud in
	    AT mode is sent at 8 data bit no parity, when  you  switch
	    in  asynchronous V25bis commands, the format is unchanged.
	    It is  important  to  remember  that  the  CCITT  rules  for  the
	    asynhcronous  V25bis function,  provide a format of 7 bit Even
	    parity.

	    Store:  S31 (bit 0, 1, 7)
	    Default= %V0

       %Z1  Global reset
	    Reset the hardware and load the configuration specified by the &Y
	    command.

	    Deault=n/a

       !N1= Store Caller Identification number (CALLER ID)
	    This command enable you store the telephone number for the CALLER
	    ID function.
	    !N1="nnnn"     where  "nnnn"  is  the  telephone  number  without
			   prefix
	    !N1?           show the stored telephone number

	    To enable the CALLER ID function, please refer to the AT*I command.

	    Store: yes
	    Default= n/a

       !N2= Store MultiSubscriber number (MSN)
	    This command enables you to store the telephone number for the
	    MultiSubscriber Number function.
	    !N2="nnnn" where "nnnn" is composed  of  prefix+number  (p.e.
			   331263122)
	    !N2?           show the stored MultiSubscriber number

	    To enable the MultiSubscriber Number function,   please refer to
	    the AT*M command.

	    Store: yes
	    Default= n/a

22


       !N3= Store Subaddress number
	    This command enable to store the Subbaddres field for the
	    Subaddress function.
	    !N3="ssss"     where "ssss" is the Subaddress field with a
			   maximum of 4 alphanumeric characters.
			   (0,1,2,3,4,5,6,7,8,9,A,B,C,D,*,#).
	    !N3?           Display the stored Subaddres field

	    To enable the Subaddress function,  please refer to the AT*S
	    command.

	    Store: yes
	    Default= n/a

23


	2.4. V25bis COMMAND SET

       The CCITA Terminal adapter complies with the V25bis recommentations.
       Calls and answers are managed through the command set and the C108/2
       interface circuit.

       2.4.1. Asyncronous V25bis  format

       The command format is the following:
						MESSAGE <CR> <LF>

       The MESSAGE  field can contain from 3 to 60, 8 bit characters (7 data
       bit Even parity).

       2.4.2. V25bis command set and messages

       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       COMMAND   DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       CIC       Connect incoming call.
       CRN       Call request with number.
       CRS       Call request with memory address in the phonebook.
       DIC       Disregard incoming call.
       PRN       Store phone number in a memory address.
       RLN       List request of stored numbers.
       CNL       Local configuration, V25bis escape sequence.
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ


       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       MESSAGE   DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       CFI       Call failure indication.
       INC       Incoming call.
       INV       Invalid command.
       LSN       List stored phone number.
       ONL       ON LINE status.
       VAL       Valid command.
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

24


       2.4.3. V25bis command set description
       
       CIC  Connect incoming call
	    The  TA will go on-line in answer mode,  ignoring any DIC command
	    previously issued.  If no incoming call is present  the  TA  will
	    responde with the INV message.

       CRN  Call request with number
	    It  is  used  to  initiate  a  data  call.  The command is always
	    followed by  the  dial  string.  Here following  are  the  valid  dial
	    parameters:
	    0-9  Digit from 0 to 9.
	    T    For compatibility
	    P    For compatibility

       CRS  Call request with memory address
	    The TA will go on-line and  dial according to the dial string
	    stored in the memory address.
	    0-7  Dial string memory address.

       DIC  Disregard incoming call
	    Using this command the TA will disregard the incoming  call.  DIC
	    disables the auto answer mode.

       PRN  Store phone number in memory address
	    This  command  is  used  to  store  a  phone number to one of the
	    CCITA's eight memory address.
	    0-7  Available memory address.
	    ;    Separator.  Inserted between dial string memory address  and
		 dial string ex.: PRN 05;263122.

       RLN  List request of stored phone number
	    Used to list all the phone numbers stored in memory.

       CNL  Local configuration
	    Any  AT  command  string  may  be  entered as a parameter of this
	    command. Ex. (CNLS0=2).
	    

25


       2.4.4. V25bis message description

       CFI NT    Call failure indication
		 The TA sends this message when a call fails to connect.

       CFI NS    Call failure indication
		 The TA sends this message when it is not possible to call
		 a stored telephone number because it is not in the phonebook

       INC  Incoming call
	    The TA sends this message when incoming ringing is detected on
	    the line.

       INV  Invalid command
	    Command entered is invalid.

       LSN  List of stored numbers
	    In response to the RLN command the TA displays the list of
	    stored numbers.

       ONL  ON LINE status
	    The TA sends this message when the connection is established.

       VAL  Valid command
	    The TA successfully executes the entered command.


26


       2.5. S-registers

       S-registers are byte-wide locations in TA memory containing
       information about the terminal adapter's configuration.
       All values are in decimal format.
       If the register type is non-storable,  the register value  has  to  be
       written after the TA is reset or powered on.


       2.5.1. S-registers list

       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       REGISTER  DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       S0        Number of ring to answer on
       S1        Ring count
       S2        Escape sequence character
       S3        Carriage return character
       S4        Line feed character
       S5        Back-space character
       S7        Wait time for connection
       S12       Escape prompt delay
       S25       DTR control
       S31       V25bis command mode selector
       S34       Pointer for Autologon
       S37       DCE speed
       S49       DCE-DTE flow control
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

27


       2.5.2. S-registers description

       S0   Number of rings to answer on
       Value     Unit      Function
       0         RING      No auto answer
       1-5       RING      Yes auto answer;  TA answers after the number of
			   rings selected

	    Default=  0
	    Type:     Storable

       S1   RING count
	    Number of rings in a period of 8 seconds
       Value     Unit      Function
       0         RING      No ring in a period of 8 seconds
       1-5       RING      RING count

	    Default=  0
	    Type:     Non Storable

       S2   ESCAPE sequence character
       Value     Unit      Function
       0-127     ASCII     Contains the ESCAPE sequence character. If the
			   value  is  greater  then  127,  escape sequence is
			   disabled

	    Default=  43
	    Type:     Storable

       S3   CARRIAGE RETURN character
       Value     Unit      Function
       0-127     ASCII     Contains the CARRIAGE RETURN character

	    Default=  13
	    Type:     Non-storable

       S4   LINE FEED character
       Value     Unit      Function
       127       ASCII     Contains the LINE FEED character

	    Default=  10
	    Type:     Non-storable

       S5   BACKSPACE character
       Value     Unit      Function
       0-127     ASCII     Contains the BACK SPACE character

	    Default=  8
	    Type:     Non-storable

       S7   Wait time for connection
       Value     Unit      Function
       0-255     sec.      In originate mode, maximum amount of time to wait
			   between end of dialing and the connection
	    Default=  30
	    Typr:     Storable



28



       S12  Escape prompt delay
       Value     Unit      Function
       0         ms        No escape prompt delay
       0-255     20ms      Defines escape prompt delay before, during, and
			   after the ESCAPE sequence, so that the escape
			   sequence can be valid

	    Default=  50
	    Type:     Storable

       S25  DTR control
       Value     Unit      Function
       0-255     sec/100   Defines the time related to &D1 command

	    Default = 5
	    Type:     Storable

       S31  V25bis command mode selector.
	    Bit-mapped register.
	    Select either the AT command mode or the supported  V25bis
	    command modes.
	    All bits  =    0    AT command mode
	    Bit 1-0   =    00   V25bis Async
		      =    01   No available
		      =    10   No available
		      =    11   No available
	    Bit 7     =    0    V25bis disabled
		      =    1    V25bis enabled

	    Default   0
	    Type :    Non-storable

       S34  Pointer for Autologon service
	    Establishes the election of the memory location the TA uses to
	    initiate Autologon procedure.
	    0         =    0 phonebook location
	    1         =    1 phonebook location
	    2         =    2 phonebook location
	    3         =    3 phonebook location
	    4         =    4 phonebook location
	    5         =    5 phonebook location
	    6         =    6 phonebook location
	    7         =    7 phonebook location
	    255       =    Function disabled

	    Default   255
	    Type :    Storable

29


       S37  DCE  speed
	    Selects the speed connection through the selected V.110 rate
	    adaption protocol (see ATN command).
	    Returns OK if desired speed is implemented and an ERROR otherwise.
	    0, 255    Last AT command speed
	    4         =    600 bps
	    5         =    1200 bps
	    6         =    2400 bps
	    14        =    3600 bps
	    15        =    4800 bps
	    16        =    7200 bps
	    17        =    9600 bps
	    18        =    12000 bps
	    19        =    14400 bps
	    27        =    19200 bps
	    50        =    38400 bps

	    Default = 0
	    Type :    Storable

       S49  DCE-DTE flow control
	    Display the value of the &K command,  which  specifies  DTE  flow
	    control setting
	    0    No DTE flow control
	    3    RTS/CTS flow control enabled
	    4    Bi-directional XON/XOFF flow control enabled
	    5    Transparent bi-directional XON/XOFF flow control enabled

	    Default = n/a
	    Type:     Read only

30


 
       2.6. FACTORY CONFIGURATIONS
 
       The  CCITA  ISDN Terminal Adapter,  allows you to store four different
       factory configurations.


       2.6.1. Factory Configurations Description

       CONFIGURATION 0 (loadable with AT&F0)
       This configuration allows you to make a connection using the V110 CCITT
       protocol.
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    COMMAND        DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    AT%A2=1        V110 protocol set
	    ATS0=1         Auto Answer enable at 1 RING
	    AT&C1          DCD (C109) interface circuit controlled
	    AT&D2          DTR (C108) interface circuit controlled
	    AT&K3          RTS/CTS flow control enable
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

       CONFIGURATION 1 (loadable with AT&F1)
       This  configuration allows you to make a connection using the V120 CCITT
       protocol.
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    COMMAND        DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    AT%A2=2        V120 protocol set
	    ATS0=1         Auto Answer enable at 1 RING
	    AT&C1          DCD (C109) interface circuit controlled
	    AT&D2          DTR (C108) interface circuit controlled
	    AT&K3          RTS/CTS flow control enable
	    AT&U0          Data compression disable
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

       CONFIGURATION 2 (loadable with AT&F2)
       This configuration allows you to make a connection using the V120 CCITT
       protocol plus the V42bis data compression.
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    COMMAND        DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    AT%A2=2        V120 protocol set
	    ATS0=1         Auto Answer enable at 1 RING
	    AT&C1          DCD (C109) interface circuit controlled
	    AT&D2          DTR (C108) interface circuit controlled
	    AT&K3          RTS/CTS flow control enable
	    AT&U1          Data compression enable
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

31


       CONFIGURATION 3 (loadable with AT&F3)
       This  configuration allows you to make a connection using the V110 CCITT
       protocol and the asynchronous V25bis command set.
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    COMMAND        DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
	    AT%A2=1        V110 protocol set
	    ATS0=1         Auto Answer enable at 1 RING
	    AT&C1          DCD (C109) interface circuit controlled
	    AT&D2          DTR (C108) interface circuit controlled
	    AT&K3          RTS/CTS flow control enable
	    AT%V1          V25bis command set enable
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ


32


       2.7. AUTO-LOGON OPERATION

       The auto logon sequence is directly related to  the  TA  phone  number
       stored  using &Z command.  The auto logon sequence is executed either
       when the TA is in originate mode  or in  auto  answer mode.
       The auto logon managment is based on the following control fields. Max
       number of characters is 35.
       The autologon sequence transmission is established by ^T command
       The autologon sequence reception is established by ^R command
       The AT command execution is established by ^C command

       To finish the auto-logon sequence press "ENTER" key.
       Example: Auto-logon sequence using security password.

	    step      command        TA rensponse

	    1         AT&Z2=^T       AT&Z2=<CR><LF>(Transmit)
	    2         Password?^R    Password?<CR><LF>(Receive)
	    3         MONIQUE<CR>    MONIQUE<CR><LF>OK

       Description

	    1         Start of the sequence, to be stored in the second
		      memory location, containing the field transmission
		      request.
	    2         The field to transmit is "Password?" followed by the
		      receive field check command.
	    3         The field to check is "MONIQUE". The sequence is
		      completed by <CR> (Return) command.

       The auto-logon  sequence can start either with a transmission field or
       with a receive field check.
       For every receive field there is an associated a 30 second timer.
       When  timer  elapses,  and the TA does not receive the expected message,
       the auto-logon sequence is stopped and  the  TA  goes off-line  and
       displays  "AUTO-LOGON FAILED" message .
       To  examine the contents of the auto-logon sequence stored in the memory
       location, type the AT&Zn? commmand, ( "n" is the number of the memory
       location).


33


       2.7.1. Auto-Logon control character

       The auto-logon sequence can contain control characters in  decimal
       or hexadecimal format.
       Description of the control characters.

	    Character      Description

	    ^A        Carriage Return.
	    ^Xnn      To  insert  an  hexadecimal  character. "nn"  is  the
		      hexadecimal value of the character.
	    ^P        Pause.
	    ^C        Select the command field in order to allow the  remote
		      TA  to  execute  an  AT  command  sequence.  Has  to be
		      inserted as the last character in the auto-logon sequence.
	    ^T        Select the transmission field.
	    ^R        Select the receive field.


34


	2.8. HARDWARE OPTIONS


       Inside the external line interface  of  the  CCITA,  are two jumpers
       used  to  configure  the  impedence  of  the  CCITA  and  in
       particular:
	ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       JUMPER    POSITION       DESCRIPTION
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
       J2        Insert         Receive Termination 100 ohm
       J2        Disconnected   
       J3        Insert         Transmit Termination 100 ohm
       J3        Disconnected   
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ


35


       3. DIAGNOSTICS

       This TA has an automatic internal self test diagnostic that commences
       automatically when the T.A. is turned on.


       3.1. DIAGNOSTIC ACTIVATION

       If the CCITA is turned off and on, it automatically starts the internal
       self test diagnostics.
       During  the  automatic diagnostics, the LED on the external
       interface follows this sequence:

			    RED -----> ORANGE -----> RED

       If the LED does not follow this color sequence, the T.A. probably has an
       internal fault.
       During the connection, the LED on the external interface follow this
       sequence:
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
		 COLOR          STATUS
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
		 Red            TA deactivated (Off Line status)
		 Green          TA activated (Off Line status)
		 Orange         TA in On Line mode
       ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

       The activation/disactivation Terminal Adapter status, does not indicate
       any problems inside the TA.
       These sequences only allow you to enable/disable only Layer 1 connection
       procedures from ISDN network to the TA.


36



       3.2. LOOP ACTIVATION

       On the CCITA,  the diagnostic tests are activated using the AT commands
       from a terminal emulation progam.

       3.2.1. Local Loop Activation

       With the T.A.  in Off Line mode,  send the AT&T1 command to enable the
       local loop test.
       To disable the local loop test send to the T.A.  the  escape  sequence
       (+++) and the AT&T0 command.

       3.2.2. Remote Loop Activation

       To activate this test, please follow these steps:
       #    Make the connection with a remote T.A.
       #    Set the escape sequence (+++) to the T.A. to go into command mode
       #    Send the AT&T3 command to activate the remote loop test.  All the
	    data that you type passes through the ISDN network, to the
	    remote T.A. interface and loops back to the local T.A.

       To disable the remote loop test send the escape sequence to the T.A.  
       (+++) and the AT&T0 command.

37

digicorp Technical Support

If you have any further problems or queries, please contact us at digicorp.
tel.: +44 (0) 1372 844151
Email: Support@digicorp.co.uk
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Very important: You must reboot your system to ensure that any driver updates have taken effect.

For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.

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