[cisco-voip] SIP and MTP

[Andrius Kislas]

> I’m confused .... about SIP trunks on CCM J
> 
> The documentation states that SIP requires a MTP for DTMF processing....
> and the config pages of CCM do not allow to disable MTP.
> 
> Does that mean all calls, which are processed via a SIP trunk terminate
> on the CCMs MTP? Or just calls how need DTMF? Or always because there
> could be DTMF involved?
> 
> Can anyone point out what happens there? How does that work?


http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a008055cd69.html#wp1127648