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CUCM and Unity SIP trunk -- No service

Ravi Saggu
Level 1
Level 1

We are establishing SIP trunk between CUCM and Unity for 7 digit voicemail dial out. Everything is configured right with configuration between them only SIP trunk establishment are not in service with 503 error.

Version: CUCM 12.5 SU7              Unity 12.5 SU7

Troubleshooting: Both server are able to ping each other

We did check the DNS server: Forward and reverse lookup are present and configured

I have also added each other certificate on them as trusted (CallManager-trust).

2 Replies 2

Ravi Saggu
Level 1
Level 1

CUCM:

admin:utils network ping ucx-pub.mkmg.com

PING ucx-pub.mkmg.com (192.168.200.14) 56(84) bytes of data.

64 bytes from ucx-pub.mkmg.com (192.168.200.14): icmp_seq=1 ttl=64 time=0.095 ms

64 bytes from ucx-pub.mkmg.com (192.168.200.14): icmp_seq=2 ttl=64 time=0.094 ms

64 bytes from ucx-pub.mkmg.com (192.168.200.14): icmp_seq=3 ttl=64 time=0.063 ms

64 bytes from ucx-pub.mkmg.com (192.168.200.14): icmp_seq=4 ttl=64 time=0.078 ms

--- ucx-pub.mkmg.com ping statistics ---

4 packets transmitted, 4 received, 0% packet loss, time 3004ms rtt min/avg/max/mdev = 0.063/0.082/0.095/0.015 ms

admin:utils network host ucx-pub.mkmg.com

Local Resolution: Nothing found

External Resolution:

ucx-pub.mkmg.com has address 192.168.200.14

admin:utils network connectivity ucx-pub.mkmg.com

This command can take up to 3 minutes to complete. Continue (y/n)?y

Running test, please wait ... .

Test failed with ucx-pub: Unknown hostname/ipAddress

 

Unity: admin:utils network ping midhud-ucm-pub.mkmg.com

PING midhud-ucm-pub.mkmg.com (192.168.200.10) 56(84) bytes of data.

64 bytes from midhud-ucm-pub.mkmg.com (192.168.200.10): icmp_seq=1 ttl=64 time=0.128 ms

64 bytes from midhud-ucm-pub.mkmg.com (192.168.200.10): icmp_seq=2 ttl=64 time=0.077 ms

64 bytes from midhud-ucm-pub.mkmg.com (192.168.200.10): icmp_seq=3 ttl=64 time=0.072 ms

64 bytes from midhud-ucm-pub.mkmg.com (192.168.200.10): icmp_seq=4 ttl=64 time=0.407 ms

--- midhud-ucm-pub.mkmg.com ping statistics ---

4 packets transmitted, 4 received, 0% packet loss, time 3007ms rtt min/avg/max/mdev = 0.072/0.171/0.407/0.138 ms

admin:utils network host midhud-ucm-pub.mkmg.com

Local Resolution: Nothing found

External Resolution: midhud-ucm-pub.mkmg.com has address 192.168.200.10

admin:utils network connectivity midhud-ucm-pub.mkmg.com

This command can take up to 3 minutes to complete. Continue (y/n)?y

Running test, please wait ... . Test failed with midhud-ucm-pub: Unknown hostname/ipAddress

We did check the DNS server: Forward and reverse lookup are present and configured Also I have added each other certificate on them as trusted (CallManager-trust).

 

Have you completed the configuration on Unity  ? Phone system, port group and ports... Also check the network Connectivity on SIP port.

 

https://www.youtube.com/watch?v=uR9iaGqZFyQ

 



Response Signature


In this video, I'll show you how to configure the CUCM-CUC SIP integration using 11.x releases. The relevant documentation which you should also review, is this: The integration guides can be found here Configuration Guides ...