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SRST For SIP IP Phone

zara6500dolfin
Beginner
Beginner

 Hi guys;

 

  I have one cluster CUCM with 11.5 version

 

All the Ip Phone registered to CUCM

i Configured SRST reference and added to Device pool

when CUCM is Down all 78XX and 88XX  ip phone registered to SRST Router,But when CUCM is goes UP again Dose not revert to That.

I configured SIP and SCCP Srst but  this problem just for SIP IP phone.

there is my configuration in below

voice service voip
ip address trusted list
ipv4 192.168.40.29
ipv4 192.168.40.31
ipv4 192.168.40.32
ipv4 192.168.40.33
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
h323
no h225 timeout keepalive
sip
bind control source-interface GigabitEthernet0/0.150  < Interface is for srst reference in cucm >
bind media source-interface GigabitEthernet0/0.150
registrar server

voice register global
mode esrst
no allow-hash-in-dn
system message WAN IS DOWN
max-dn 120
max-pool 110
!
voice register pool 1
registration-timer max 120 min 60
id network 192.168.81.0 mask 255.255.255.0 < Ip phone subnet >
dtmf-relay rtp-nte
no vad
!

sip-ua
registrar ipv4:192.168.40.29 expires 3600  < CUCM ,s IP >

 

 

CUCM packet capture:

20:59:47.842604 IP CUCM.NET.local.ssh > 192.168.81.140.8803: Flags [P.], seq 155108:155400, ack 833, win 140, length 292
20:59:47.847604 IP CUCM.NET.local.ssh > 192.168.81.140.8803: Flags [P.], seq 155400:155580, ack 833, win 140, length 180

20:59:47.848100 IP 192.168.81.140.8803 > CUCM.NET.local.ssh: Flags [.], ack 155580, win 513, length 0


!

PLZ help me that i Solved it

TNX Dears

1 Reply 1

Roger Kallberg
VIP Expert VIP Expert
VIP Expert

For a great many details on setup of SRST please have a look at this post. https://ucpros.net/cisco-sip-srst-configuration/



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