Installation guide

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Cisco AS5850 Universal Gateway Commissioning Guidelines
78-10537-04
How to Commission the Cisco AS5850 Universal Gateway
The Cisco IOS software provides a command-line interface (CLI) called the EXEC. The EXEC has the
following properties:
• Can be accessed by dialing in with a modem
• Provides access to terminal EXEC-shell services (no PPP) to do the following:
– Modify configuration files
– Change passwords
– Troubleshoot possible problems including modem connections
– Access other network resources through use of Telnet
While performing this task, some administrators try to make complex services function, such as
PPP-based web browsing. However, many other elements still need to be configured (for example, PPP
and IPCP) before these services may be configured.
The asynchronous-shell test ensures that the EXEC log-in prompt can be accessed by a client modem.
Taking a layered approach to building a network isolates problems and saves time.
Note • The Cisco AS5850 is designed to process primarily PPP sessions. If you need to support high levels
of EXEC-shell users or V.120 users compared to PPP sessions, ask your support team to advise you
on optimal system configuration.
• Many modems support the a/ command, which recalls the last AT command. The ath command
hangs up a modem call. The atdl command dials the last telephone number.
To test asynchronous EXEC-shell connections, perform the following steps.
Step 1 Locate a client PC, client modem, and analog line. From the client PC, open a terminal-emulation
program (such as Hyper Terminal, not Dial-Up Networking) and connect to the client modem. Figure 6
shows the network environment for this test.
Figure 6 Network Test Environment
Step 2 From a terminal-emulation program, test the EIA/TIA-232 connection to the client modem. Enter the
at command. The modem sends an OK return message.
at
OK
Step 3 Dial the PRI telephone number assigned to the universal gateway. After the modem successfully
connects, a connect message appears.
atdt5551234
CONNECT 28800 V42bis
Client PC
Network gateway
Default
gateway
Client
modem
PSTN
Analog PRI
33191