Connecting Dial-In And Dial-Out Modems; Table 15-6 Modem Interface Requirements - Cisco BPX 8620 Installation And Configuration Manual

Chapter 15 Connecting Temporary Terminal and Attaching Peripherals

Connecting Dial-In and Dial-Out Modems

Cisco Customer Service uses modems to remotely diagnose and correct customer problems with
installed BPX switches. You can connect to a modem to each BPX switch to provide remote access.
The modem currently recommended for use with the BPX switch is the Codex Model V.34R. You must
use an auto-answer modem.
A dial-in connection to a BPX switch RS-232 from Cisco Customer Service through a modem uses the
control port of the BPX switch. This port is bidirectional transmit and receive.
A dial-out connection from a BPX switch through a modem to Cisco Customer Service uses the auxiliary
port of the BPX switch.
The modems connect to a standard telephone line wall jack. The modem connections require special
cables and setup procedures.
If the BPX switch is equipped with redundant BCCs, you must use a RS-232 Y-cable for the connections.
The modem interface requirements are described in Table 15-6.

Table 15-6 Modem Interface Requirements

Parameter
BPX switch Port
Used:
Code:
Interface:
Cable to modem:
Phone Lines:
Data Rate:
Supported Modems:
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Requirement
Control port on BCC back card is used for auto-answer modem setup.
Auxiliary port on a BCC back card is used for auto-dial modem setup.
Standard 8-bit ASCII, 1 stop-bit, no parity
RS-232 DCE
Null modem cable: CONTROL or AUXILIARY port to modem (DCE to
DCE)
Dedicated, dial-up business telephone line for Cisco Customer
Service-to-BPX switch modem
All standard asynchronous data rates from 300 to 19200 bps,
independently software-selectable
Motorola V.34R 28.8 baud modem with or without talk/data button
Cisco BPX 8600 Series Installation and Configuration
Connecting Dial-In and Dial-Out Modems
15-11