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CME-SRST Issues

Good Morning Group

I’m wondering if I could trouble you for some of your valuable time to help me resolve my cme-srst issue that I currently have.

We are running CUCM 8.5.1 and we are trying to configure our Cisco 2911’s to use SRST, now the Router is registered with the CUCM as shown below.

Primary         Registered               172.28.140.8

First Backup   Backup Ready             172.30.213.75

Second Backup   Backup Ready             172.30.213.15

We are using VRF’s in our network and understand that MGCP is not VRF aware, for this reason we used another port on the Router and used static Routing to allow us to connect and register with our CUCM.

When I drop he WAN link our phone does not fall over to SRST mode, looking at the phone itself SRST is shown in the Unified CM configuration as one of its fall backs.

Below are our configs which I’m hoping will show you what I’m missing to get SRST working.

Show CCM Manager

Priority       Status                   Host

============================================================

Primary         Registered               172.28.140.8

First Backup   Backup Ready             172.30.213.75

Second Backup   Backup Ready             172.30.213.15

Current active Call Manager:   172.28.140.8

Backhaul/Redundant link port:   2428

Failover Interval:             30 seconds

Keepalive Interval:             15 seconds

Last keepalive sent:           09:56:31 BST Oct 23 2013 (elapsed time: 00:00:08)

Last MGCP traffic time:         09:56:31 BST Oct 23 2013 (elapsed time: 00:00:08)

Last failover time:             09:28:03 BST Oct 23 2013 from (172.30.213.75)

Last switchback time:           09:28:33 BST Oct 23 2013 from (172.30.213.15)

Switchback mode:               Graceful

MGCP Fallback mode:             Enabled/OFF

Last MGCP Fallback start time: 09:28:36 BST Oct 23 2013

Last MGCP Fallback end time:   09:42:31 BST Oct 23 2013

MGCP Download Tones:           Disabled

TFTP retry count to shut Ports: 2

Configuration Auto-Download Information

=======================================

Current version-id: 1382348526-e29c21c9-1148-41ce-ac1e-2e92d99462ba

Last config-downloaded:00:00:00

Current state: Waiting for commands

Configuration Download statistics:

       Download Attempted             : 8

         Download Successful         : 8

         Download Failed             : 0

         TFTP Download Failed         : 0

       Configuration Attempted       : 2

         Configuration Successful     : 2

         Configuration Failed(Parsing): 0

         Configuration Failed(config) : 0

Last config download command: New Registration

FAX mode: disable

Configuration Error History

ccm-manager fallback-mgcp

ccm-manager redundant-host 172.30.213.75 172.30.213.15

ccm-manager mgcp

no ccm-manager fax protocol cisco

ccm-manager music-on-hold

ccm-manager config server 172.29.2.10

ccm-manager config

!

mgcp

mgcp call-agent 172.28.140.8 2427 service-type mgcp version 0.1

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp package-capability rtp-package

mgcp package-capability sst-package

mgcp package-capability pre-package

no mgcp package-capability res-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static

mgcp bind control source-interface GigabitEthernet0/2

mgcp bind media source-interface GigabitEthernet0/2

!

mgcp profile default

telephony-service

srst mode auto-provision all

srst dn line-mode dual

max-ephones 27

max-dn 27

ip source-address 10.2.175.1 port 2000

system message NCC CME BACKUP Active

keepalive 20

max-conferences 8 gain -6

transfer-system full-consult

secondary-dialtone 9

create cnf-files version-stamp 7960 Oct 23 2013 08:41:31

!

Is there anything that is obvious that is missing, if you require debugs or anything else please shout up, I have been up most of the night trying to configure this so forgive me if I have missed something in this post

Regards

Martyn

1 ACCEPTED SOLUTION

Accepted Solutions

CME-SRST Issues

Hi

If you shut down the WAN link , may be that cause problem. I requested from you to do the below :-

ip route 172.28.140.8 255.255.255.255 null 0

ip route 172.30.213.75 255.255.255.255 null 0

ip route 172.30.213.15 255.255.255.255 null 0

This will down the connection to your CCM , and we will get more information.

Thank you

Please rate all useful information



6 REPLIES

CME-SRST Issues

Hi

i have a question for SRST configuration on CUCM , do you have configured SRST on your DP.On Device Pool configuration , you will find route group (this should be assign tou your registered MGCP router which will be used for SRST) and on srst down select use default gateway and 30 to monitor,

Thank you

Please rate all useful information

CME-SRST Issues

Hi

we will fix it , but give me an answer for the above. On your Gateway , all required you have already done.

Thank you

Please rate all useful information

CME-SRST Issues

Hi

If you shut down the WAN link , may be that cause problem. I requested from you to do the below :-

ip route 172.28.140.8 255.255.255.255 null 0

ip route 172.30.213.75 255.255.255.255 null 0

ip route 172.30.213.15 255.255.255.255 null 0

This will down the connection to your CCM , and we will get more information.

Thank you

Please rate all useful information



New Member

Re: CME-SRST Issues

we use VRF so your routing statements will not work.

The Dp had the correct information also

Thanks for the reply

Sent from Cisco Technical Support iPhone App

CME-SRST Issues

Hi

I am sorry ,

ip route vrf voice 172.28.140.8 255.255.255.255 null 0

ip route vrf voice 172.30.213.75 255.255.255.255 null 0

ip route vrf voice 172.30.213.15 255.255.255.255 null 0

Thank you

Please rate all useful information

Re: CME-SRST Issues

Hi

try also under

telephony-service

group 1 vrf voice

Thank  you

please rate all useful information

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