When a voice gateway receive a call , you can divide your call in an inbound and outbound leg.
Let’s see how the inbound priority matching .
- incoming-called-number (called number “DNIS” information used)
- answer-address (calling number “ANI” information used)
- destination-pattern (calling number “ANI” information used)
- voice-port (that has dial port configured)
During WAN failure , we can observe that H323 will not preserve absolutely the call when the failover occurs as there is no more any signal from the CUCM.
An unofficial workaround is to use the command h225 timeout to suppress the keepalive between the Call Manager and the gateway.
!
no h225 timeout keepalive
!
Here is as short recap/representation of the MQC ( Modular QoS CLI)
Step #1 : Classify Traffic => CLASS-MAP
Step #2 : Assisgn Policies to the traffic classes => POLICY-MAP
Step #3 : Apply the policy to an interface => SERVICE-POLICY
The higher is the codec complexity , the fewer number of calls that the DSP can process
Hi ,
Just thinking how can we make a pstn emulator in a lab …. First thought is to use a CME router with several T1/E1 , BRI cards to distribute PSTN connection back-to-back to all locations …..
Need to think about it !!!
Very good article on how to maintain the CSS under the SRST mode but it is also true for CCME Config .
http://www.blindhog.net/maintaining-class-of-restriction-during-srst/
Recent Comments