Hold Implementation - Polycom SoundPoint IP 600 SIP Administrator's Manual

Administrator Guide - SoundPoint
Response
606 Not Acceptable

5.1.5 Hold Implementation

SoundPoint
method, no longer recommended due in part to the RTCP problems associated with it,
is to set the "c" destination addresses for the media streams in the SDP to zero, for
example, c=0.0.0.0. The second, and preferred, method is to signal the media direc-
tions with the "a" SDP media attributes sendonly, recvonly, inactive or sendrecv. The
hold signaling method used by SoundPoint
see 4.6.2.1.3 SIP <SIP/> on page 103) but the telephone supports both methods when
signaled by the remote endpoint.
5.1.6 Reliability of Provisional Responses
SoundPoint
5.1.7 Transfer
SoundPoint
cc-transfer-05 and RFC 3515.
5.1.8 Third Party Call Control
SoundPoint
ciated with third party call control applications.
5.2 Protocol Extensions
SoundPoint
®
IP
Supported
No
® IP supports both currently accepted means of signaling hold. The first
®
IP fully supports RFC 3262 - Reliability of Provisional Responses.
® IP supports transfer using the REFER method specified in draft-ietf-sip-
® IP supports the delayed media negotiations (INVITE without SDP) asso-
®
IP supports the following SIP protocol extensions.
Copyright © 2004 Polycom, Inc.
Session Initiation Protocol (SIP)
Notes
® IP is configurable (for more information,
125