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

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A call watch group can monitor either local interfaces or remote IP addresses (that is, IP connectivity to
remote interfaces), but not both.
The state of the E1/T1 interface associated with a call watch group is set as follows:
• If local interfaces are monitored, the E1/T1 interface is set to watch-out state when all the monitored
local interfaces are down.
• If IP connectivity to remote interfaces is monitored, the E1/T1 interface is set to watch-out state when
all the monitored remote IP addresses are unreachable.
Call watch mode
A call watch group can operate in hard or soft mode on an E1/T1 interface.
• In soft mode, the E1/T1 interface will be set to watch-out state after all the monitored links are
detected unavailable only if no calls are present on the interface.
• In hard mode, the E1/T1 interface is set to watch-out state immediately after all the monitored links
are detected unavailable regardless of whether calls are present on the interface.
Configuring call watch for an E1/T1 interface
Configuring call watch for an E1/T1 interface includes these tasks:
• Configuring a call watch group
• Associating the E1/T1 interface with the call watch group
Configuring a call watch group
Configuring a call watch group creates the call watch rules in the group. To monitor the IP connectivity
to remote interfaces, a call watch group must collaborate with the NQA and Track modules. Thus,
configure the remote IP addresses to be monitored with NQA, and configure the Track function to work
with NQA to send probe messages to the call watch group. In a call watch group, the rule for monitoring
a remote interface is the track object ID associated with the interface.
You can create up to 255 call watch groups on each voice device.
You can configure a call watch group to monitor up to 16 local interfaces or remote IP addresses.
For more information about configuring the NQA function, see Network Management and Monitoring
Configuration Guide.
For more information about configuring the Track function, see High Availability Configuration Guide.
To configure a call watch group:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Create a rule in a call
watch group.
• Specify a local interface in the rule
call-watch rule watch-number local
interface interface-type
interface-number
• Specify a track object ID in the rule
call-watch rule watch-number remote
track track-entry-number
Use either command.
To create multiple rules in the
call watch group, repeat the
step.