R3303-HP HSR6800 Routers Layer 2 - WAN Configuration Guide

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Managing a modem
This chapter describes how to manage and control the modem connected to the device.
Setting the modem answer mode
To ensure correct modem operations, you must set the modem answer mode to be the same as the
answer mode of the modem:
• If the modem is in auto-answer mode (a modem is in auto-answer mode if its AA LED is on), use the
modem auto-answer command to prevent the device from issuing answer instructions.
• If the modem is in non-auto answer mode, use the undo modem auto-answer command to enable
the device to issue answer instructions when it receives incoming calls.
To set the modem answer mode:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter user interface view.
user-interface { first-num1
[ last-num1 ] | { aux | console | tty
| vty } first-num2 [ last-num2 ] }
N/A
3. Configure the call-in/call-out
rights for the modem.
modem { both | call-in | call-out }
Modem call-in and call-out are
denied by default.
4. Set the maximum interval
allowed between picking up
the handset and dialing when
a user tries to establish a
connection.
modem timer answer time
Optional.
60 seconds by default.
5. Set the modem to operate in
auto-answer mode.
modem auto-answer
Optional.
The default mode is non-auto
answer mode.
6. Return to system view.
quit N/A
7. Enable modem callback.
service modem-callback
Optional.
Disabled by default.
Troubleshooting
Symptom
Modem is in abnormal status (for example, the dial tone or busy tone keeps humming).