Std Sip Transfer-Unattended - NEC Univerge SV8100 Features And Specifications Manual

Issue 13.0
System Availability
Terminals
SIP Terminals Compliant with RFC 3261, RFC 3262, RFC 3264 (Session Description Protocol),
RFC 1889 (Real Time Protocol).
Required Components
CD-CP00-US

PZ-32IPLA/IPLB, PZ-64IPLA/IPLB or PZ-128IPLA/IPLB

Related Features
None

STD SIP Transfer-Unattended

Description
With Version 6000 or higher software, any standard SIP terminal can perform an Unattended (Blind/
Unsupervised) transfer. Refer to Section 2.4 (transfer-Unattended) of
draft-ietf-sipping-service-examples-15.txt
Conditions
Program10-26-03 (SIP Peer to Peer Mode) must be disabled for the Unattended Transfer

to be performed.
A SIP terminal must receive the re-Invite message of Session Timer in a state of

Unattended transfer.
When the transfer destination terminal is busy, unanswered or the extension number in the

Refer-To header is wrong or out of service, the call is sent back to the original terminal.
If the standard SIP phone is placed on hold/park from another extension, this call cannot be

transferred until the station that placed the call on hold/park retrieves the call. An
unattended transfer can only be completed while both parties are in a talking state.
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UNIVERGE SV8100
IP Single Line Telephone (SIP)