Matrix SPARSH VP710 User Manual page 419

Call Recording Using DSS Keys (Record and URL Record)
The IP phone supports recording calls by tapping the call record key. It depends on support from a SIP server.
When you tap the call record key, the IP phone sends a record request to the server.
IP phone itself do not have memory to store the recording, what they do is to trigger the recording and indicate the
recording status.
Normally, there are 2 main methods to trigger a recording on a certain server. We call them record and URL record.
Record is for the IP phone to send the server a SIP INFO message containing a specific header. URL record is for
the IP phone to send the server an HTTP GET message containing a specific URL. The server processes these
messages and decides to start or stop a recording.
If it is a video call, you can only record the audio but not video by tapping record/URL record key.For more
information on recording video calls, refer to Call Recording Using Soft Key.
Record
When a user taps a record key for the first time during a call, the IP phone sends a SIP INFO message to the server
with the specific header "Record: on", and then the recording starts.
Example of a SIP INFO message:
Via: SIP/2.0/UDP 10.3.20.14:5060;branch=z9hG4bK1870385345
From: "1009" <sip:1009@10.2.1.48:5060>;tag=1385842459
To: <sip:1006@10.2.1.48:5060>;tag=2383911905
Call-ID: 0_1289812066@10.3.20.14
CSeq: 2 INFO
Contact: <sip:1009@10.3.20.14:5060>
Max-Forwards: 70
User-Agent: MATRIX SPARSH VP710 58.80.196.2 00:1b:09:04:8e:3c
Record: on
Content-Length: 0
Matrix SPARSH VP710 User Guide 411