McDewey

Only third-party SIP devices can initiate a G.Clear call with Unified Communication Manager. Note Example of SDP having a G.Clear codec: v=0 o=XYZ 317625 317625 IN IP4 172.18.199.61 s=XYZ c=IN IP4 172.18.199.61 t=0 0 m=audio 30002 RTP/AVP 125 a=rtpmap:125 CLEARMODE/8000 a=ptime:20 Unified Communications Manager also support other rtpmap attributes in addition to the CLEARMODE. It can identify X-CCD, CCD and G.nX64 rtpmap attributes as G.Clear codec in incoming SDPs. Unified CM supports sending one of these values - CLEARMODE, X-CCD, CCD, and G.nX64 in rtpmap attribute of the outgoing SDP. This is based on Unified CM configuration. For example, Unified CM must be configured to send this attribute line for a G.Clear codec in outgoing SDPL: a=rtpmap:125 X-CCD/8000 Early Offer Support for G.Clear Calls Unified Communications Manager will route the call based on the called number in the INVITE request-uri to another SIP endpoint or over SIP trunk. Unified CM includes the offer SDP in the outgoing INVITE for G.Clear calls, which is configurable. The SDP included in outgoing INVITE is received from the incoming SIP call leg. Therefore, Unified CM supports sending offer SDP in outgoing INVITE without requiring an MTP, only for G.Clear calls. Unified CM Voice calls will still require the 'MTP Required' check box to be enabled to include SDP for voice calls. BFCP Release 8.6(1) of Unified Communications Manager adds support for negotiation of the Binary Floor Control Protocol (BFCP) between SIP Line and SIP Trunk devices participating in calls that include a presentation sharing session. Presentation sharing is the ability to send a second video stream such as a PowerPoint slide presentation in addition to the main video stream. BFCP enables this functionality. SIP Line Messaging Guide (Standard Edition) for Cisco Unified Communications Manager 36 SIP Standard Line Interface Early Offer Support for G.Clear Calls