MGCP fallback to h323 with SRST on 2600 gateway

[eyal_b]

I'm implementing a connection between Cisco2600 with 2FXS and 2FXO, configured as MGCP gateway, to CCM 3.2. when the gateway is in SRST mode, there is no dial-tone on the FXSs, I can call from the 2FXO or IPPHONE (SRST mode) to the fxs extensions but no dial-tone on the fxs.

Any idea????????

following my configuration:

ccm-manager redundant-host x.x.x.x

ccm-manager mgcp

!

mgcp

mgcp call-agent x.x.x.x service-type mgcp version 0.1

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

!

dial-peer voice 100 pots

description FXS

application mgcpapp

destination-pattern 600

port 1/0/0

!

dial-peer voice 101 pots

description FXS

application mgcpapp

destination-pattern 601

port 1/0/1

!

call-manager-fallback

ip source-address y.y.y.y port 2000

max-ephones 10

max-dn 10

i've tried few 12.2 versions with no luck.

Thanks in advance. Eyal

[mimckee]

To my knowledge the only version of IOS that supporst MGCP fallback to h.323 at the time is 12.2(2)xn. This only talks about pri but it may work for fxo and fxs as well.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122limit/122x/122xn/122xn2/ft_ccm.htm#xtocid49

Hope this helps,

-Mckee

[eyal_b]

You right, but ios 12.2(2)xn does not support SRST.

the fallback is working in other ios versions but the only problem is not having dial-tone on the FXSs.

it looks like something is missing here.

Eyal.

[mimckee]

No you are not the 2 features are not in the same version of IOS yet. I think I heard 12.2(11)T for both SRST and the mgcp fallback to be in the same release. Remember the IOS version numbers are always subject to change.

Thank you,

-Mckee