Polycom Version 1.4.x 17 - Manual (Page 39)

Administrator Guide - SoundPoint ® IP / SoundStation ® IP Features
Copyright © 2004 Polycom, Inc. 31
two concurrent calls per registration (line). This is an artificial limit and will be
expanded in the future.
3.1.20 Shared Call Appearances
Calls and lines on multiple phones can be logically related to each other. A call that is
active on one phone will be presented visually to phones which share that call appear-
ance. Mutual exclusion features emulate traditional PBX or key system privacy for
shared calls. Incoming calls can be presented to multiple phones simultaneously. This
feature is dependent on support from a SIP server which binds the appearances
together logically and looks after the necessary state notifications and performs an
access control function. For more information, see 5.2.4 Shared Call Appearance Sig-
naling on page 139.
Central
(boot
server)
Configuration file:
ipmid.cfg Specify whether diversion should be disabled on shared
lines.
• For more information, see 4.6.1.10 Call Handling
Configuration on page 92.
Configuration file:
sip.cfg Specify line-seize subscription period.
• For more information, see 4.6.2.1.2 Server
on page 114.
Specify standard or non-standard behavior for processing
line-seize subscription for mutual exclusion feature.
• For more information, see 4.6.2.1.3.4 Special Events
on page 118.
Configuration file:
phone1.cfg Specify per-registration line type (private or shared) and
line-seize subscription period if using per-registration
servers. A shared line will subscribe to a server providing
call state information.
• For more information, see 4.6.3.1 Registration
on page 121.
Specify per-registration whether diversion should be dis-
abled on shared lines.
• For more information, see 4.6.3.3 Diversion
on page 124.