SIP hold-refer-reinvite

When SIP hold-refer-reinvite is enabled for REFER with Replaces, the system queues the outgoing Invite populated from the received REFER based on the dialog state.

In a deployment where a call goes through the Oracle® Enterprise Session Border Controller (ESBC) before going to an Interactive Voice Response (IVR) server, the ESBC proxies the intermediate reinvite that the IVR sends to the transfer target. If the intermediate reinvite is in either the pending state or the established state when the IVR initiates the transfer to the transfer target, the ESBC terminates the call prematurely. The hold-refer-reinvite option allows the ESBC to queue the Out Going INVITE from the received REFER request when the previously proxied reinvite request is in either the pending state or the established state. The result is a successful call.

Enable the SIP hold-refer-reinvite option from the ACLI command line or the Web GUI in Advanced mode.