CHAPTER
3-1
Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
3
Operations
This chapter details Cisco AS5800 routine operations performed on a daily basis to configure router
interfaces.
In our discussion, local-based authentication is used. After the Cisco AS5800 hardware is
commissioned, PPP is configured and tested as described in the section “Configuring PPP and
Authentication” on page 25.
Verifying Modem Performance
This section describes how to verify and test modem performance on a Cisco AS5800 by using an EXEC
terminal shell service.
The following sections are provided:
• Background on Asynchronous Data Communications, page 3-1
• Understanding Modem Modulation Standards, page 3-7
• Initiating a Modem Loopback Test Call, page 3-9
• Initiating and Inspecting a V.90 Test Call, page 3-17
An EXEC terminal shell service tests modem performance (lower layers) independently of PPP (and
higher layers). A terminal-shell service test gets quick test results in a simple environment.
For information on how to manage modem pools and collect call statistics, see the “Modem Management
Operations” section on page 3-40.
Background on Asynchronous Data Communications
Understanding how EIA/TIA-232 states function with the Cisco IOS software helps you test and
troubleshoot modem connections:
• Async DataComm Model, page 3-2
• Logical Packet and Circuit Components of a NAS, page 3-2
• EIA/TIA-232 in Cisco IOS Software, page 3-4
• Cisco IOS Line-Side Inspection, page 3-6
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