Troubleshooting Survivable Remote Site Telephony - Cisco WS C4224V 8FXS - 200Mbps Ethernet Switch Software Configuration Manual

Troubleshooting Survivable Remote Site Telephony

Step 4
Note
Troubleshooting Survivable Remote Site Telephony
Command
debug ephone keepalive
debug ephone register
debug ephone state
debug ephone detail
debug ephone error
debug ephone statistics
Catalyst 4224 Access Gateway Switch Software Configuration Guide
8-10
Temporarily block the TCP port 2000 Skinny Client Protocol (SCCP) connection
for one of the Cisco IP Phones. This forces the Cisco IP Phone to lose its
connection to Cisco CallManager and register with the SRS Catalyst 4224.
Perform the following:
Use the appropriate access-list command to temporarily disconnect a
1.
Cisco IP Phone from Cisco CallManager.
The Cisco IP Phone 7960 and 7940 display the message "CM Fallback Service
Operating" at the bottom of the display screen. The Cisco IP Phone 7910 displays
the message "CM Fallback Service" for five seconds every 30 seconds. This
message is brief because the Cisco IP Phone 7910 has a two-line display area and
the display panel is also used to display the telephone number.
Delete the access-list command to restore normal service for the phone by
2.
entering the no form of the appropriate access-list command.
Use the debug ephone register command to observe the registration process
3.
of the Cisco IP Phone on the SRST Catalyst 4224.
You can also enter the show ephone command to display the Cisco IP Phones
4.
that have registered to the SRST Catalyst 4224.
Use the following commands to troubleshoot the SRST feature.
Purpose
Sets keepalive debugging for the Cisco IP Phone.
Sets registration debugging for the Cisco IP Phone.
Sets state debugging for the Cisco IP Phone.
Sets detail debugging for the Cisco IP Phone.
Sets error debugging for the Cisco IP Phone.
Sets call statistics debugging for the Cisco IP Phone.
Chapter 8 Configuring Survivable Remote Site Telephony
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