Dsskey Recording (Record And Url Record) - Yealink SIP-T2 Series Administrator's Manual

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Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860 IP Phones

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.

It is not applicable to SIP-T19(P) E2/CP860 IP phones.

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

Content-Length: 0

When the user presses the record key for the second time, the IP phone sends a SIP INFO

message to the server with the specific header "Record: off", and then the recording stops.