Multimedia uris, Rtp streaming – Cisco OL-20949-01 User Manual
Page 57
5-9
Cisco Unified IP Phone Services Application Development Notes
OL-20949-01
Chapter 5 Internal URI Features
Multimedia URIs
Multimedia URIs
These sections describe the multimedia URIs:
•
•
•
RTP Streaming
You can invoke RTP streaming via URIs in services. You can instruct the phone to transmit or receive
an RTP stream with the following specifications:
•
•
•
•
Note
For some Cisco Unified IP Phone models, the RTP Streaming URIs have been deprecated by the RTP
Streaming API. See the
“RTP Streaming API” section on page 4-1
The supported format of the RTP stream is as follows:
•
The codec is G.711 mu-Law.
•
The packet size is 20 ms.
The following list gives these possible CiscoIPPhoneError codes:
•
Error 1 = Error parsing
CiscoIPPhoneExecute
object
•
Error 2 = Error framing
CiscoIPPhoneResponse
object
•
Error 3 = Internal file error
•
Error 4 = Authentication error
Interaction with Call Streaming
•
Existing Tx URI streams will be terminated if a new call begins or an existing call is resumed
•
Tx URI stream requests received when a call is active will be rejected with an
errorNo=4
unauthorized
. If a call is in a Held state (connected but not actively streaming), the Tx URI request
will be accepted, but will be terminated if the call is resumed.
Note
Returning
errorNo=4
allows the application to distinguish this error from the normal
errorNo=1
busy
response.
•
Existing Rx URI streams will be terminated if a new call begins or an existing call is resumed.