R2511-HP MSR Router Series Voice Configuration Guide(V5)

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Associating the E1/T1 interface with the call watch group
To adapt the state of an E1/T1 interface to the state of the monitored local links in a call watch group,
you must associate the E1/T1 interface with the call watch group. Note that, each E1/T1 interface can
be associated with only one monitor group.
To associate the E1/T1 interface with the call watch group:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter E1/T1 interface view.
controller controller-type number N/A
3. Associate the interface with the call
watch group.
• In hard mode:
call-watch group watch-number hard
• In soft mode:
call-watch group watch-number soft
Use either
command.
Displaying and maintaining call watch
Task Command Remarks
Display information about the call watch
groups associated with E1/T1
interfaces.
display call-watch status [ controller
controller-type controller-number ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any
view.
Call-watch configuration examples
This section provides call-watch configuration examples.
Monitoring local interfaces
Network requirements
As shown in Figure 86, device Voice A is connected through two local links to Router B and through an
E1 link to the PBX to which Router A is connected to provide VoIP communication between Router A and
Router B in normal cases.
To enable device Voice A to disable interface E1 1/0 from routing calls destined for Router B when
interfaces Ethernet 1/1 and Ethernet 1/2 go down so that the PBX can immediately switch to a backup
link, do the following:
• Configure a call watch group to monitor interfaces Ethernet 1/1 and Ethernet 1/2.
• Apply the call watch group to interface E1 1/0 and configure the call watch group to work in hard
mode.