Hi Guys,

I am having an issue with SIP provider only supporting rfc2833. The CUBEs are 
configured only for rtp-nte on all dial-peers facing both the provider and the 
CUCM internal network (multiple clusters)

Randomly one of the MGCP/h323 gateway is having issues, where it only supports 
OOB and then further complications trying to resolve the problem. 

I am planning to add sip kpml as well on top of rtp-nte to advertise both 
inband and outofband DTMF methods towards our internal CUCM network and let 
CUBE do inter-working in case where one leg is rfc2833 (carrier side) and other 
is kpml(internal network lets say MGCP gateway). Trying to stay away from MTPs.

Any gotchas if I just go ahead and add kpml on top of existing rtp-nte method 
(on CUBE dial-peers facing our internal network) as I don’t want to break the 
setup where only inband is supported, hard to check in a global deployment. 

Any need to use digit-drop in case both inband and out of band digits are sent? 
If required it will be only on dial-peers facing CUCM side? Or this is not 
required as the provider only supports rfc2833. 

Thanks
GR




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