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sipCallTransfer

SIP call transfer and SIP REFER keeps the original SIP leg connected, i.e., the originating dialer's connection does not disconnect and reconnect. But there is a difference between sipCallTransfer and sipRefer handle the call transfer.

The main difference between sipCallTransfer and sipRefer is the outbound connection to the new sip endpoint. In sipCallTransfer, the Daily SIP network is continued to be used, which is great when you are moving the SIP connection from one Daily Room to another. However, if the destination SIP URI is outside of Daily's SIP network, you may not want to keep Daily in the loop. In this case, you should use sipRefer.

Note: that there are pricing implications of using sipCallTransfer vis-a-vis sipRefer, please reach out to help@daily.co or contact sales.

You can transfer dial-in call and sip refer with the Daily API.

These REST endpoints are relatively similar to Daily's Client SDK APIs sipCallTransfer(), sipRefer() calls found in our daily-js.