IMG 1010 - SIP REFER Call Transfer

The IMG supports the SIP REFER method of transferring calls. This method utilizes the Refer-To Header field to pass contact information such as the URI INFO provided in the request. Feature F-759 (SIP REFER) gives the IMG the ability to act as either a Transferee or a Transfer Target when used as part of the SIP Call Transfer functionality between three SIP User Agents (UAs). The IMG cannot become a Transferor. This will be left to an application written on a different server. Below is a short description of the three functions.

...