Hello all,
I would like to share with you my problem and look for the solution. Since a couple of days I'm trying to bring my ISR G2 2901 in my lab to be capable of handling SRST for SIP phones and it driving me crazy - btw I've successfully done it for SCCP phones.
I went through a couple of other problems described here in this community, and I finally reached this point.
Phones are sending REGISTER message to the SRST reference, and the router even responds to that message. However phones keeps sending REGISTER message. It looks like the phone is registered and shows for a couple of seconds message "SRST Mode" which is my failover text, but then it turns to keep showing "Registering". What's more interesting is that after some time it attempts to register for a second time and it even successfully doing that, but router start responding with 500 Internal Server Error.
You can clearly see that when looking at pcap and router console debug. In the text file there is also at the end part of my related SRST configuration.
I have even tried to upgrade IOS to one of the latest to exclude some defect, but it's still beahaving the same.
Lab Topology:
Router - 172.16.11.1 (SRST Reference)
CUCM - 10.1.10.20 (ver 10.5.2 SU8 with latest DevicePack)
SIP Phones 7975 and 7962 - 172.16.11.11 and 172.16.11.13
Enabled debug:
CCSIP SPI: SIP Call Message tracing is enabled (filter is OFF)
CCSIP SPI: SIP Call Events tracing is enabled (filter is OFF)
CCSIP SPI: SIP error debug tracing is enabled (filter is OFF)
CCSIP SPI: SIP Out-of-Dialog tracing is enabled (filter is OFF)
voice-register:
voice-register error debugging is on
voice-register events debugging is on
LAB-HQ-RTRV-01#show sip-ua status registrar
Line destination expires(sec) contact
transport call-id
peer
============================================================
+48220001001 172.16.11.11 844 172.16.11.11
UDP 00235e17-ed4c15d6-91dd2e25-5327cf6f@172.16.11.11
40002
+48220001001 172.16.11.11 1112 172.16.11.11
UDP 00235e17-ed4c1602-653cb99b-1fc9a42c@172.16.11.11
40002
+48220001003 172.16.11.12 761 172.16.11.12
UDP c8f9f968-6da215b5-23a5574c-a5a2c363@172.16.11.12
40003
+48220001003 172.16.11.12 1036 172.16.11.12
UDP c8f9f968-6da215dc-248b67fe-66b3e7fa@172.16.11.12
40003
LAB-HQ-RTRV-01#sh voice register global
CONFIG [Version=12.0]
========================
Version 12.0
Mode is srst
Max-pool is 5
Max-dn is 5
Outbound-proxy is enabled and will use global configured value
Security Policy: DEVICE-DEFAULT
Allow-hash-in-dn is enabled
Forced Authorization Code Refer is enabled
System message is SRST Mode
timeout interdigit 4
timeout transfer recall 0
network-locale[0] US (This is the default network locale for this box)
network-locale[1] US
network-locale[2] US
network-locale[3] US
network-locale[4] US
user-locale[0] US (This is the default user locale for this box)
user-locale[1] US
user-locale[2] US
user-locale[3] US
user-locale[4] US
MWI unsolicited notify is disabled
Active registrations : 4
Total SIP phones registered: 2
Total Registration Statistics
Registration requests : 52
Registration success : 52
Registration failed : 0
unRegister requests : 48
unRegister success : 48
unRegister failed : 0
Auto-Register requests : 0
Attempts to register
after last unregister : 0
Last register request time : 12:42:43.719 CET Sun Jun 30 2019
Last unregister request time : 12:34:06.292 CET Sun Jun 30 2019
Register success time : 12:42:43.719 CET Sun Jun 30 2019
Unregister success time : 12:34:06.293 CET Sun Jun 30 2019
Looking forward to your ideas.
Thanks you in advance.
Best regards,
WeNt
WeNt
