Streaming in Idle State
Action URI is a function in the SIP terminal, and is supported by the Mitel 6800/6900*) SIP phones. The function requires a dedicated key for Streaming in idle state/Music On Idle, MOI, but the streaming connections do not use SIP messages or calls. This could be an advantage if there are many thousand phones that shall have this function.
*) Low-end models, like the 6863 do not have any free key resource, so they are not suitable.
There are two streaming configurations supported; multi-cast or unicast. An Administrator or User of the 6800/6900 phones can configure a specific key (soft-key, programmable key, or expansion module key, here called streaming/MOI key) on the phone, that allows you to send/receive a Real Time Transport Protocol (RTP) stream to/from pre-configured multi-cast addresses without involving SIP signaling. This is called Paging on the Mitel 6800/6900 SIP phones. You can specify many listening multi-cast addresses. Note that a specific “Off/Stop” menu entry should be initiated.
After pressing a configured “Streaming/MOI” key on the phone, the phone receives an RTP stream from a pre-configured multi-cast address (IP port). Any phone in the local network then listens for the RTP stream on the pre-configured multi-cast address (IP port). For both sending and receiving of the multi-cast RTP there is no SIP signaling involved. When the phone sends or receives a multi-cast RTP.
The 6800/6900 SIP telephones currently use a pre-configured G.711 mu-Law CODEC only.
The unicast configuration works in a similar way, except that the key pressing will start the streaming to that specific extension, while for multi-cast, the streaming will be active all the time.
A proprietary XML protocol is used for the key and display handling. The SIP phone’s Paging function will be utilized.
Streaming is supported for Mitel 6800 SIP telephones, and later models. The Action URI functions must be supported and active, and a specific soft-key defined for the MOI function.