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This chapter provides cable-connector and pinout information for the Cisco IP/VC 3530 VTA.
The VTA uses the V.35 interface with EIA/TIA-366 signalling to communicate with H.320 room systems. The VTA has two 26-pin WAN ports, each of which combines the V.35 interface with EIA/TIA-366 signalling to support a 1B channel. Two proprietary V.35/EIA/TIA-366 cables assemblies are shipped with the VTA. Each assembly features a V.35 cable and a EIA/TIA-366 cable attached to a single, 26-pin connector. You must connect the cables to the complementary room system parts. Both ports must be connected for the VTA to support 2B calls.
Table B-1provides pinout information for the three proprietary cable assembly connectors.
| VTA Port 26-pin Male Connector | Function | Direction | V.35 Port Winchester Connector | EIA/TIA-366 Signalling 25-pin Male Connector |
|---|---|---|---|---|
4 | DPR | <-- |
| 2 |
17 | ACR | --> |
| 3 |
6 | CRQ | <-- |
| 4 |
20 | PND | --> |
| 5 |
18 | DSC | --> |
| 13 |
24 | NB1 | <-- |
| 14 |
23 | NB2 | <-- |
| 15 |
25 | NB4 | <-- |
| 16 |
22 | NB8 | <-- |
| 17 |
19 | DLO | --> |
| 22 |
26 | GND |
|
| 7, 18, 19 |
1 | GND |
| A, B |
|
10 | TD(A) | <-- | P |
|
8 | RD(A) | --> | R |
|
14 | TC(A) | --> | Y |
|
12 | RC(A) | --> | V |
|
21 | DSR | --> | E |
|
5 | RTS | <-- | C |
|
11 | TD(B) | <-- | S |
|
9 | RD(B) | --> | T |
|
15 | TC(B) | --> | AA |
|
13 | RC(B) | --> | X |
|
3 | CTS | --> | D |
|
2 | DCD | --> | F |
|
7 | DTR | <-- | H |
|
16 | RI | --> | J |
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Note If you connect the 25-pin male connector to the configuration PC (COM 2), you may need a female/female adapter. |
Table B-2 contains function and direction information for an EIA/TIA-232 9-pin male connector.
| EIA/TIA-232 9-Pin Male Connector | Function | Direction |
1 | Not Connected | --- |
2 | RXD | <-- |
3 | TXD | --> |
4 | Not Connected | --- |
5 | GND | --- |
6 | Not Connected | --- |
7 | Not Connected | --- |
8 | Not Connected | --- |
9 | Not Connected | --- |
Table B-3 contains function and direction information for an EIA/TIA-232 9-pin female connector.
| EIA/TIA-232 9-Pin Female Connector | Function | Direction |
1 | Not Connected | --- |
2 | RXD | <-- |
3 | TXD | --> |
4 | DTR | --> |
5 | GND | --- |
6 | DSR | <-- |
7 | RTS | --> |
8 | CTS | <-- |
9 | Not Connected | --- |
To connect the VTA serial port to a modem or a PC you need a null modem cable. Figure B-1 illustrates the connector configuration.
Posted: Mon Jun 5 13:31:41 PDT 2000
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