Configuring Advanced Features
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7. Select the desired channel from the pull-down list of Channel.
8. Click Confirm to accept the change.
Dsskey Recording (Record and URL Record)
Yealink IP phones support record calls by pressing the call record key. It depends on support
from a SIP server. When the user presses the call record key, the IP phone sends a record
request to the server. IP phones themselves do not have memory to store the recording, what
they can 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.
Note
Record
When a user presses 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: Yealink SIP-T46G 28.81.0.25
Record: on
It is not applicable to SIP-T19(P) E2 IP phones.
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