Specifications

Aastra July 2014 PA-001011-03-04

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Softkey 1

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XML Example

</AastraIPPhoneExecute>

4.4 RTP streaming

The Aastra SIP Phones have XML commands to use with the AastraIPPhoneExecute object,

these commands allow the phone to send/receive an RTP stream to/from any given

multicast/unicast addresses (without involving any SIP signaling).

The XML commands to use with the AastraIPPhoneExecute object in an XML application are:

 RTPRx (Receive (Rx) a Unicast RTP stream or stop receiving a Unicast/Multicast RTP

streams)

 RTPTx (Transmit (Tx) a Unicast RTP stream or stop transmitting a Unicast/Multicast RTP

streams)

 RTPMRx (Receive (Rx) a Multicast RTP stream)

 RTPMTx (Transmit (Tx) a Multicast RTP stream)

Note: Though the RTP commands could be considered as URIs they can not be used directly

as a URI, they must be launch using a AastraIPPhoneExecute command..

The phones support only the following RTP stream format:

 G.711 µ-law Codec

 20 ms packet size

Note: If one of the previous commands is sent to phone which is already in a communication,

current call is placed on hold and the RTP streaming commands are performed using a new

audio path.

Each RTP streaming command supports 2 modes:

 With audio path mixing

 Without audio path mixing

When the RTP streaming command is sent to the phone with an existing audio path (the phone is

in the “connected” state), depending on the mixing parameter, the phone will behave differently.