Question

A CUBE running IOS XE connects a G.729-only ITSP SIP trunk to an internal CUCM cluster where all IP phones are configured to use only G.711ulaw. Calls between the phones and the PSTN fail to establish media, and debugs show a codec negotiation failure. The gateway has spare DSP resources available. Which media resource must you configure on the CUBE to allow these calls to complete?

Accepted Answer

A DSP farm profile of type transcode registered as a transcoder media resource

Answer

A DSP farm profile of type conference to bridge the two codec domains

Answer

An MTP (Media Termination Point) software profile with no DSP resources

Answer

A DSP farm profile of type mtp registered for RTP-to-RTP passthrough