3745 MGCP won't fail over

[hwilms]

Hello,

I have a 3745 witha PRI configured as mgcp 12.3(7)T1

The IP phones will not fail over to SRST when CCM is down. Will IP voice 12.3(7)T1 work or does this have to be a Plus version. I could not find Plus version for 12.3. Some conversations on this forum also lead me to believe there are issues with MGCP and SRST. any help would be appreciated

[abdulr]

SRST does work with MGCP configured GWY. Can you post your config on the MGCP GWY.

[Erick Bergquist]

SRST does so work with MGCP.

You need these 2 global commands, besides the fallback config.

ccm-manager fallback-mgcp

call application alternate DEFAULT

On the pots dial-peers, make sure they have 'application mgcpapp' under them. the Destination-pattern will come into play when in fallback (H323) mode.

[hwilms]

ccm-manager fallback-mgcp

ccm-manager mgcp

ccm-manager music-on-hold

ccm-manager config server 10.1.30.5

ccm-manager config

controller T1 0/0

framing esf

linecode b8zs

pri-group timeslots 1-24 service mgcp

call application alternate default

mgcp

mgcp call-agent 10.1.30.5 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp package-capability rtp-package

no mgcp package-capability res-package

mgcp package-capability sst-package

no mgcp package-capability fxr-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

no mgcp explicit hookstate

mgcp rtp payload-type g726r16 static

call-manager-fallback

secondary-dialtone 9

max-conferences 8

ip source-address 10.1.30.1 port 2000

max-ephones 48

system message primary Cisco SRST-fallback mode

dialplan-pattern 1 856830.... extension-length 4

keepalive 10

access-code pri 9 direct-inward-dial

voicemail 9856830XXXX

[Daniel Baum]

What version of CallManager is being used?

If 3.3x, you will need to enable SRST in CCMAdmin System / Device Pool / SRST Reference for the Device Pool. By default SRST is disabled.

SRST Reference

From the drop-down list box, choose a survivable remote site telephony (SRST) reference to assign to devices in this device pool. You have the following options available:

Disable--If you choose this option, devices in this device pool will not have SRST reference gateways available to them.

Use Default Gateway--If you choose this option, devices in this device pool use the default gateway for SRST.

Existing SRST references--If you choose an SRST reference from the drop-down list, devices in this device pool will use this SRST reference gateway.

See CCMAdmin System / SRST to add SRST References for the device pool SRST Reference.

In addition see:

Configuring SRS Telephony and MGCP Fallback

http://www.cisco.com/en/US/tech/tk652/tk701/technologies_tech_note09186a0080144630.shtml

See the Cisco Feature Navigator II for the Feature to IOS version you need:

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

Dan