SIP to H.323 Direct Media

Last Updated : Nov 10, 2020 |

Communication Manager uses the SIP to H.323 Direct Media feature to directly connect SIP stations or SIP trunks to H.323 stations, without using a media resource and shuffling the call.

When a call connects, the Direct Media feature signals a direct talk path from a SIP station or a SIP trunk to an H.323 station. The Direct Media feature can be activated on the Signaling Group screen, in the Initial IP-IP Direct Media field. To establish a direct path during a call setup, SIP stations and H.323 stations must use the same IP version, IPv4 or IPv6.

The benefits of using the SIP to H.323 Direct Media feature are:

  • Elimination of the SIP to H.323 call shuffling after the call connects

  • Elimination of clipping on the talk path

  • Decrease in the number of signaling messages for each SIP to H.323 call

  • Early detection of the media path in the call flow and use of fewer media processor resources to configure the system

  • Reduction in the processing time of each SIP-H.323 call, and increase in the SIP Busy Hour Call Completions (BHCC) capacity

For more information on the Initial IP-IP Direct Media field, see Avaya Aura® Communication Manager Screen Reference.