Specifications

Configuring and Managing Integrated Modems
Managing Modems
DC-95
Cisco IOS Dial Technologies Configuration Guide
Configuring a Microcom Modem to Poll for Statistics
Manageable Microcom modems have an out-of-band feature, which is used for polling modem statistics.
To configure the system to poll for modem statistics, use the following commands in global
configuration mode:
Troubleshooting Using a Back-to-Back Modem Test Procedure
You can manually isolate an internal back-to-back connection and data transfer between two modems
for focused troubleshooting purposes. For example, if mobile users cannot dial in to modem 2/5 (which
is the sixth modem port on the modem board in the second chassis slot), attempt a back-to-back test with
modem 2/5 and a modem known to be functioning, such as modem 2/6. You might need to enable this
command on several different combinations of modems to determine which one is not functioning
properly. A pair of operable modems connect and complete sending data in both directions. An operable
modem and an inoperable modem do not connect with each other.
To perform the modem test procedure, enter the test modem back-to-back first-slot/port
second-slot/port command, as follows:
Step 1 Perform a back-to-back modem test between two normal functioning modems. This example shows a
successful connection between modem 1/1 and modem 1/0, which verifies normal operating conditions
between these two modems:
Command Purpose
Router(config-line)# modem log {cts | dcd | dsr |
dtr | ri | rs323 | rts | tst}
or
Router(config-line)# no modem log {cts | dcd | dsr
| dtr | ri | rs323 | rts | tst}
Configures the types of EIA/TIA events that are stored in the
modem log. The default setting stores no EIA/TIA events.
Turns off the logging of a specific type of EIA/TIA event.
Command Purpose
Step 1
Router(config)# modem poll time seconds
Specifies the number of seconds between statistical modem
polling for Microcom modems. The default is 12 seconds. The
configuration range is from 2 to 120 seconds.
Step 2
Router(config)# modem poll retry number
Sets the maximum number of polling attempts to Microcom
modems. The default is three polling attempts. The
configuration range is from 0 to 10 attempts.
1
1. If the number of attempts to retrieve modem status or statistics exceeds the number you define, the out-of-band feature is removed from
operation. In this case, you must reset the modem hardware using the clear modem command.
Step 3
Router(config)# modem status-poll
Polls for status and statistics for a Microcom modem through the
modem’s out-of-band feature.
Step 4
Router(config)# modem buffer-size number
Defines the number of modem events that each modem is able to
store. The default is 100 events for each modem. Use the show
modem log command to display modem events.