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# 3COM CORPORATION
3COMIMPACT IQ (3C882)
Card Type ISDN TA
Chipset Unidentified
Error Correction/Compression STAC
ISDN Transfer Rate 56Kbps x 2/64Kbps x 2
ISDN Protocol V.120, PPP
Switch Type 5ESS, DMS100, EWSD, NI-1
Data Bus Serial
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| ISDN U interface | CN1 | Analog adapter 2 | CN4 |
|----------------------+-------+---------------------+-------|
| Serial port | CN2 | 9V DC power in | CN5 |
|----------------------+-------+---------------------+-------|
| Analog adapter 1 | CN3 | Reset switch | SW1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+-------+----------+----------------------------------|
| PWR | Green | On | Power is on |
|------+-------+----------+----------------------------------|
| PWR | Green | Off | Power is off |
|------+-------+----------+----------------------------------|
| TEST | Green | On | TA failed last test |
|------+-------+----------+----------------------------------|
| TEST | Green | Blinking | TA is executing test |
|------+-------+----------+----------------------------------|
| TEST | Green | Off | TA is not executing test |
|------+-------+----------+----------------------------------|
| D | Green | On | Signal is not synchronized or |
| | | | ISDN is not connected |
|------+-------+----------+----------------------------------|
| D | Green | Blinking | Signal is synchronized but |
| | | | D-channel protocols not |
| | | | established |
|------+-------+----------+----------------------------------|
| D | Green | Off | Signal is synchronized |
|------+-------+----------+----------------------------------|
| B1 | Green | On | Data call connected on B1 |
| | | | channel |
|------+-------+----------+----------------------------------|
| B1 | Amber | On | Voice call connected on B1 |
| | | | channel |
|------+-------+----------+----------------------------------|
| B1 | Green | Blinking | TA is dialing data call on B1 |
| | | | channel |
|------+-------+----------+----------------------------------|
| B1 | Amber | Blinking | TA is dialing voice call on B1 |
| | | | channel |
|------+-------+----------+----------------------------------|
| B1 | N/A | Off | B1 channel is not connected |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) (CON’T) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+----------+-----------------------------------|
| B2 | Green | On | Data call connected on B2 channel |
|-----+-------+----------+-----------------------------------|
| B2 | Amber | On | Voice call connected on B2 |
| | | | channel |
|-----+-------+----------+-----------------------------------|
| B2 | Green | Blinking | TA is dialing data call on B2 |
| | | | channel |
|-----+-------+----------+-----------------------------------|
| B2 | Amber | Blinking | TA is dialing voice call on B2 |
| | | | channel |
|-----+-------+----------+-----------------------------------|
| B2 | N/A | Off | B2 channel is not connected |
|-----+-------+----------+-----------------------------------|
| SD | Green | On | TA is transmitting data |
|-----+-------+----------+-----------------------------------|
| SD | Green | Off | TA is not transmitting data |
|-----+-------+----------+-----------------------------------|
| RD | Green | On | TA is receiving data |
|-----+-------+----------+-----------------------------------|
| RD | Green | Off | TA is not receiving data |
|-----+-------+----------+-----------------------------------|
| TR | Green | On | DTR signal is high |
|-----+-------+----------+-----------------------------------|
| TR | Green | Off | DTR signal is low |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++ |
|------------------------------------------------------------|
| A, E, H, O, Q, V, W, Z |
|------------------------------------------------------------|
| &C, &D, &F, &W |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| \Q, \T |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| S0 |
|------------------------------------------------------------|
| Note:See MHI help file for complete information. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| ANALOG ADAPTER CALL ROUTING |
|------------------------------------------------------------|
| Format: | AT | |
| | [cmds] | |
| | S63= n | |
| | [cmds] | |
|------------------+----------| |
| | Default: | 15 | |
|---+--------------+----------| |
| | Range: | 0 - 15 | |
|---+--------------+----------| |
| | Description: | Selects | |
| | | which | |
| | | analog | |
| | | adapters | |
| | | may | |
| | | answer | |
| | | which | |
| | | calls. | |
|---+--------------+----------+------------------------------|
| | Bit | Value | Function |
|---+--------------+----------+------------------------------|
| | 0 | 0 | Calls to analog adapter 1 |
| | | | may not be answered by |
| | | 1 | analog adapter 1. |
| | | | |
| | | | Calls to analog adapter 1 |
| | | | may be answered by analog |
| | | | adapter 1. |
|---+--------------+----------+------------------------------|
| | 1 | 0 | Calls to analog adapter 1 |
| | | | may not be answered by |
| | | 1 | analog adapter 2. |
| | | | |
| | | | Calls to analog adapter 1 |
| | | | may be answered by analog |
| | | | adapter 2. |
|---+--------------+----------+------------------------------|
| | 2 | 0 | Calls to analog adapter 2 |
| | | | may not be answered by |
| | | 1 | analog adapter 1. |
| | | | |
| | | | Calls to analog adapter 2 |
| | | | may be answered by analog |
| | | | adapter 1. |
|---+--------------+----------+------------------------------|
| | 3 | 0 | Calls to analog adapter 2 |
| | | | may not be answered by |
| | | 1 | analog adapter 2. |
| | | | |
| | | | Calls to analog adapter 2 |
| | | | may be answered by analog |
| | | | adapter 2. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ANSWER DELAY |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S75= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects whether the TA waits to answer |
| | | an incoming call. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| » | S75=0 | TA does not wait to answer an incoming |
| | | call. |
|---+--------------+-----------------------------------------|
| | S75=1 | TA waits two seconds to answer an |
| | | incoming call. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALL TYPE |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S61= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects whether the TA will force a |
| | | particular call type. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| » | S61=0 | D command dials in standard mode and DD |
| | | command dials in 56Kbps permissive |
| | | mode. |
|---+--------------+-----------------------------------------|
| | S61=1 | Both commands dial in 56Kbps permissive |
| | | mode. |
|---+--------------+-----------------------------------------|
| | S61=2 | Both commands dial in standard mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLER ID - ANALOG ADAPTER 1 |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S65? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the Caller ID information for |
| | analog adapter 1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLER ID - ANALOG ADAPTER 2 |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S66? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the Caller ID information for |
| | analog adapter 1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLER ID - ISDN |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S67? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the Caller ID information for the |
| | ISDN line. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CHALLENGE HANDSHAKE AUTHENTICATION PROTOCOL |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S84= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects whether the TA will attempt to |
| | | use CHAP. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| | S84=0 | CHAP negotiation enabled. |
|---+--------------+-----------------------------------------|
| » | S84=1 | CHAP negotiation disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %C n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the TA will use data |
| | compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| %C2 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL - STANDARD |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D <#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Dials the number indicated to make a |
| | standard ISDN connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL - PERMISSIVE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] DD <#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Dials the number indicated to make a 56Kbps |
| | permissive connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY CONFIGURATION AND STATISTICS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \S [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the settings of all commands and |
| | statistics about the current connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY FIRMWARE VERSION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %V [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the current firmware version. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] I n [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested about the |
| | TA. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Displays model number. |
|--------------+---------------------------------------------|
| I1 | Displays ROM checksum. |
|--------------+---------------------------------------------|
| I2 | Tests and reports ROM checksum. |
|--------------+---------------------------------------------|
| I3 | Displays model and version. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY REGISTERS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %R n [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the settings of all status |
| | registers. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY SERIAL NUMBER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %S n [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the serial number of the TA. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DYNAMIC BANDWIDTH ALLOCATION |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S70= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects whether dynamic bandwidth |
| | | allocation will be used to allow |
| | | simultaneous data and voice calls. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| | S70=0 | Dynamic bandwidth allocation disabled. |
|---+--------------+-----------------------------------------|
| » | S70=1 | Dynamic bandwidth allocation enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ENDPOINT DISCRIMINATOR |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S83= nnnn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the endpoint discriminator address for |
| | multipoint PPP systems. Up to twenty |
| | numbers may be specified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ENDPOINT DISCRIMINATOR CLASS |
|------------------------------------------------------------|
| Type: | Configuration |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S82= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Sets the endpoint discriminator class |
| | | for multipoint PPP systems. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| | S82=1 | User-defined address. |
|---+--------------+-----------------------------------------|
| | S82=2 | IP address. |
|---+--------------+-----------------------------------------|
| | S82=3 | 802.1 MAC address. |
|---+--------------+-----------------------------------------|
| | S82=4 | PPP magic number block. |
|---+--------------+-----------------------------------------|
| » | S82=5 | Public Switched Network Directory |
| | | number. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCAL SERIAL PORT SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] $B n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Sets the speed that the TA will |
| | | communicate with the DTE. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| » | $B0 | Auto-detects current serial port speed. |
|---+--------------+-----------------------------------------|
| | $B1200 | Sets the serial port to 1200bps. |
|---+--------------+-----------------------------------------|
| | $B2400 | Sets the serial port to 2400bps. |
|---+--------------+-----------------------------------------|
| | $B4800 | Sets the serial port to 4800bps. |
|---+--------------+-----------------------------------------|
| | $B9600 | Sets the serial port to 9600bps. |
|---+--------------+-----------------------------------------|
| | $B19200 | Sets the serial port to 19.2Kbps. |
|---+--------------+-----------------------------------------|
| | $B38400 | Sets the serial port to 38.4Kbps. |
|---+--------------+-----------------------------------------|
| | $B57600 | Sets the serial port to 57.6Kbps. |
|---+--------------+-----------------------------------------|
| | $B115200 | Sets the serial port to 115.2Kbps. |
|---+--------------+-----------------------------------------|
| | $B230400 | Sets the serial port to 230.4Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SPEED |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S60= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects the line speed that the TA will |
| | | attempt to connect at. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| » | S60=56 | TA will attempt to connect at 56Kbps. |
|---+--------------+-----------------------------------------|
| | S60=64 | TA will attempt to connect at 64Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MULTILINK PPP |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S80= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects whether the TA will use |
| | | Multilink PPP. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| | S80=0 | Multilink PPP disabled. |
|---+--------------+-----------------------------------------|
| » | S80=1 | Multilink PPP enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PHONE NUMBER 1 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S51= <#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the TA’s first phone number. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PHONE NUMBER 2 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S53= <#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the TA’s first phone number. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL - B-CHANNEL |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S71= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects the protocol the TA will use on |
| | | the B channels. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| » | S71=0 | Auto-select common protocol. |
|---+--------------+-----------------------------------------|
| | S71=1 | TA will use PPP conversion. |
|---+--------------+-----------------------------------------|
| | S71=2 | TA will use V.120 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERVICE PROFILE IDENTIFIER 1 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S52= <#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the TA’s first SPID. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERVICE PROFILE IDENTIFIER 2 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S54= <#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the TA’s second SPID. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SWITCH TYPE |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S50= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects the type of IDSN switch the TA |
| | | is connected to. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| » | 0 | Unknown switch type |
|---+--------------+-----------------------------------------|
| | 1 | AT&T 5ESS custom switch type. |
|---+--------------+-----------------------------------------|
| | 3 | NI-1/AT&T 5ESS switch type. |
|---+--------------+-----------------------------------------|
| | 6 | NI-1/National Telecom NI-1 or Siemens |
| | | EWSD switch type. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TERMINAL ENDPOINT IDENTIFIER 1 |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S55? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the first TEI assigned by the ISDN |
| | switch. A value of 255 indicated that the |
| | switch did not assign a TEI. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TERMINAL ENDPOINT IDENTIFIER 1 STATUS |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S57? [cmds] |
|--------------+---------------------------------------------|
| Description: | Returns a value indicating the status of |
| | the first TEI. |
|--------------+---------------------------------------------|
| Value | Meaning |
|--------------+---------------------------------------------|
| 0 | TA has not attempted to initialize with |
| | SPID 1. |
|--------------+---------------------------------------------|
| 1 | TA succeeded in initializing with SPID 1. |
|--------------+---------------------------------------------|
| 2 | TA failed in initializing with SPID 1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TERMINAL ENDPOINT IDENTIFIER 2 |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S56? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the second TEI assigned by the |
| | ISDN switch. A value of 255 indicated that |
| | the switch did not assign a TEI. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TERMINAL ENDPOINT IDENTIFIER 2 STATUS |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S58? [cmds] |
|--------------+---------------------------------------------|
| Description: | Returns a value indicating the status of |
| | the second TEI. |
|--------------+---------------------------------------------|
| Value | Meaning |
|--------------+---------------------------------------------|
| 0 | TA has not attempted to initialize with |
| | SPID 2. |
|--------------+---------------------------------------------|
| 1 | TA succeeded in initializing with SPID 2. |
|--------------+---------------------------------------------|
| 2 | TA failed in initializing with SPID 2. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| U INTERFACE STATUS |
|------------------------------------------------------------|
| Type: | Register (read-only) |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S59? [cmds] |
|--------------+---------------------------------------------|
| Description: | Returns a value indicating the status of |
| | the U interface. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| 0 | U interface is not synchronized. |
|--------------+---------------------------------------------|
| 1 | U interface is synchronized. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.120 FRAME TYPE |
|------------------------------------------------------------|
| Type: | Register |
|------------------+-----------------------------------------|
| | Format: | AT [cmds] S73= n [cmds] |
|---+--------------+-----------------------------------------|
| | Description: | Selects the frame type that the TA will |
| | | use when in V.120 mode. |
|---+--------------+-----------------------------------------|
| | Command | Function |
|---+--------------+-----------------------------------------|
| » | S73=0 | TA will use I frames. |
|---+--------------+-----------------------------------------|
| | S73=1 | TA will use UI frames. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.120 MAXIMUM FRAME SIZE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S74= n [cmds] |
|--------------+---------------------------------------------|
| Default: | 256 |
|--------------+---------------------------------------------|
| Range: | 240 - 256 |
|--------------+---------------------------------------------|
| Unit: | 1 byte |
|--------------+---------------------------------------------|
| Description: | Selects the maximum frame size used for |
| | V.120 mode. |
|------------------------------------------------------------|
| Note: |
| |
| Adtran ISDN uses a maximum frame size of 253 bytes. |
+------------------------------------------------------------+