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SIP relay didn’t open heart beat switch, cause the fail route setting that aim at this bureau can’t work

Publication Date:  2012-10-11 Views:  45 Downloads:  0
Issue Description
The sip relay between softco9500 in Panjiakou and softco9500 in Daheiting is for main use. Set the fail route, tup relay is used for backup, when sip relay disconnected by accident, it turn to tup relay to get out of the bureau. After setting, client reflect that after sip relay emerge malfunction, former call can’t call out through tup, call without prompting sound, the call can’t get through.
Alarm Information
None
Handling Process
1. Ask client to check the relay physical connection, find out TUP relay and SIP relay are both normal.
2. Ask client to use SIP relay to call out alone, and use TUP relay to call out alone. Find out they call both call through.
3. Ask client to return setting script, the script is as follows:
config add dsp index 2 name daheiting interofficeindex 0 npc1 001120
config add office selectcode no 1 repeatroute no
config add office no 1 officeselectcode 1  dpx 2
config add board slot 6  type dtu officeno 1 startcic 0
config modify board slot 6  type dtu trunkport 0 officeno 1 signallingtype tup startcic 0
config add mtplinkset index 1 dpx 2
config add mtproute linksetindex 1 dpx 2
config add mtplink linkindex 2 slot 6  trunkport 0 linksetindex 1 slc 2

config add routefaildeal no 0 officeselectcode 1 cldpredeal no
config add office selectcode no 2 repeatroute yes routefaildealno 0
config add office no 2 officeselectcode 2
config add peercomponent domainname daheiting ip 10.3.113.6 tkcnum 120
config protocol sip officeno 2 domainname daheiting peerport 5060 maxcallnum 120

Daheiting softco9500,tup setting to Panjiakou
config add interoffice index 0 npc1 001120
config add dsp index 1 name pstn interofficeindex 0 npc1 001122
config add office selectcode no 0 repeatroute no
config add office no 0 officeselectcode 0  dpx 1

config add board slot 9 type dtu officeno 0 startcic 0
config modify board slot 9 type dtu trunkport 0 officeno 0 signallingtype tup startcic 0
config add mtplinkset index 0 dpx 1
config add mtproute linksetindex 0 dpx 1

config add mtplink linkindex 0 slot 9 trunkport 0 linksetindex 0 slc 0
sip relay setting to Panjiakou:
config add routefaildeal no 0 officeselectcode 0 cldpredeal no
config add office selectcode no 1 repeatroute yes routefaildealno 0
config add office no 1 officeselectcode 1 
config add peercomponent domainname panjiakou ip 10.3.113.2 tkcnum 120

config protocol sip officeno 1 domainname panjiakou peerport 5060 maxcallnum 120

Check the setting and find out that sip relay didn’t open heart relay switch, causing it can’t trigger fail route, use the following order to open heart beat switch:
config modify peercomponent domainname xxx heartbeat yes heartbeatperiod 5
Root Cause
1. Relay physical link may exists problem.
2. Relay access data setting has problem, the link is blocked, causing abnormal.
3. Fail route setting may have problem.
Suggestions
When setting the fail route, sip relay is for main use, if heart beat switch is not opened, softco doesn’t know sip relay has malfunction. It won’t trigger intelligent route, and cause fail route can’t work.
After adding relay heart beat, if the network is down, this heart beat will not get respond, this time, softco knows sip relay has malfunction, and will trigger intelligent route, then, use tup ralay to get out.
In the following two circumstances, sip relay must open heart beat switch:
1. This sip relay is used for connecting two equipments which are each other’s main and backup.
2. To increase the connecting rate, and avoid sip relay hangs dead when network is down.

END