CUCM -SIP Trunk - MAX forward

[iptsupport]

Hello all ,

When we try to call to specific destination , the call disconnect .

The scenario is : CUCM->SIP TRUNK TO Provider->provider

we got error 483 "too many hops"

The provider of calls request to change the amount of MAX-FORWARDS in PBX .

How we can modify the Max-forward value of SIP trunk ?

my CUCM version is 10.5.2

[Kalliopi Vazima]

Hello,

i think you should consider sip normalization using lua scripts.

Also check the following older reply in community.

https://community.cisco.com/t5/ip-telephony-and-phones/sip-trunk-between-cucm-and-isp/td-p/3338469

Kalliopi

[GI Alex]

In CUCM 12.5 Max-Forwards parameter is available as:

Maximum Redirections parameter in SIP Profile - Allows you to use this configuration variable to determine the maximum number of times that the phone allows a call to be redirected before dropping the call. Default specifies 70 redirections.

[Roger Kallberg]

If you have an SBC between your CM and the service provider you can change this with a SIP profile.