|
|
This appendix describes the cables and connectors that are used with the Cisco IP/VC 3520 Gateway. The topics include:
The Cisco IP/VC 3520 Gateway BRI port uses the pinout configuration shown in Table D-1 to connect to the WAN.
| Pin | Function |
3 | Transmit to network (A) |
4 | Receive from network (A) |
5 | Receive from network (B) |
6 | Transmit to network (B) |
Cisco IP/VC 3520 Gateways equipped with V.35 modules use a proprietary DTE V.35 interface with EIA/TIA-366 signalling. A proprietary V.35/EIA/TIA-366 cable assembly is shipped for each V.35 port the gateway is equipped with. The cable assembly is comprised of a V.35 cable with a Winchester connector and a EIA/TIA-366 cable with a 25-pin connector attached to a 26-pin connector. The 26-pin connector connects to the gateway WAN port. For the gateway to handle 2B calls, two WAN ports must be used.
Table D-2 provides 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 |
|---|---|---|---|---|
21 | DPR | --> |
| 2 |
24 | ACR | <-- |
| 3 |
16 | CRQ | --> |
| 4 |
22 | PND | <-- |
| 5 |
23 | DSC | <-- |
| 13 |
17 | NB1 | --> |
| 14 |
18 | NB2 | --> |
| 15 |
19 | NB4 | --> |
| 16 |
20 | NB8 | <-- |
| 17 |
25 | DLO | <-- |
| 22 |
26 | GND |
|
| 7, 18, 19 |
1 | GND |
| A, B |
|
8 | TD(A) | --> | P |
|
10 | RD(A) | <-- | R |
|
12 | TC(A) | <-- | Y |
|
14 | RC(A) | <-- | V |
|
4 | DSR | <-- | E |
|
3 | RTS | --> | C |
|
9 | TD(B) | --> | S |
|
11 | RD(B) | <-- | T |
|
13 | TC(B) | <-- | AA |
|
15 | RC(B) | <-- | X |
|
5 | CTS | <-- | D |
|
7 | DCD | <-- | F |
|
2 | DTR | --> | H |
|
6 | RI | <-- | J |
|
The Cisco IP/VC 3520 Gateway is equipped with a serial port that can be used to assign the unit an IP address and to run the diagnostic program. The serial port uses null configuration.
Cisco IP/VC 3520 Gateways are shipped with a Terminal/Modem cable that is configured for null operation. The Y-construction of the Terminal/Modem cable allows you to connect the gateway directly to the serial port of a PC or through a modem (see Figure D-1). The cable connects a male, D-type, 9-pin connector that plugs into the serial port on the gateway to a female, D-type 9-pin connector that plugs into a PC serial port and a female, D-type 26-pin connector that plugs into a modem.
The pin-configuration the Cisco IP/VC 3520 Gateway serial interface uses (see Table D-3).
| Male 9-pin RS-232 Connector Pins | Function |
|---|---|
1 | Not Connected |
2 | RXD |
3 | TXD |
4 | Not Connected |
5 | GND |
6 | Not Connected |
7 | Not Connected |
8 | Not Connected |
9 | Not Connected |
Posted: Mon Jun 5 12:29:54 PDT 2000
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