User`s guide
Polycom VVX Expansion Module Administrator’s Guide Addendum  UC Software 4.1.6 
Polycom, Inc.  52 
Parameter 
Permitted Values 
Default 
voIpProt.server.H323.x.port 
0 to 65535 
1719 
Port to be used for H.323 signaling. Note: The H.323 gatekeeper RAS signaling uses UDP, while the H.225/245 
signaling uses TCP. 
voIpProt.server.H323.x.expires 
positive integer 
3600 
Desired registration period. 
1
 Change causes phone to restart or reboot. 
<SIP/> 
This configuration parameter is defined as follows: 
Session Initiation Protocol (SIP) Parameters 
Parameter 
Permitted Values 
Default 
voIpProt.SIP.acd.signalingMethod
1
0 or 1 
0 
If set to 0, the SIP-B signaling is supported. (This is the older ACD functionality.) If set to 1, the feature 
synchronization signaling is supported. (This is the new ACD functionality.) 
voIpProt.SIP.alertInfo.x.class 
see the list of 
ring classes in 
<rt/> in the 
Polycom UC 
Software 4.1.0 
Administrator’s 
Guide 
default 
Alert Info fields from INVITE requests will be compared against as many of these parameters as are specified 
(x=1, 2, ..., N) and if a match is found, the behavior described in the corresponding ring class is applied. 
voIpProt.SIP.alertInfo.x.value 
string 
Null 
A string to match the Alert Info header in the incoming INVITE. 
voIpProt.SIP.allowTransferOnProceeding 
0, 1, 2 
1 
If set to 0, a transfer is not allowed during the proceeding state of a consultation call. 
If set to 1, a transfer can be completed during the proceeding state of a consultation call. 
If set to 2, phones will accept an INVITE with replaces for a dialog in early state. This is needed when using 
transfer on proceeding with a proxying call server such as openSIPS, reSIProcate or SipXecs. 
voIpProt.SIP.authOptimizedInFailover 
0 or 1 
0 
If set to 1, when failover occurs, the first new SIP request is sent to the server that sent the proxy authentication 
request. If set to 0, when failover occurs, the first new SIP request is sent to the server with the highest priority in 
the server list. 
If reg.x.auth.optimizedInFailover set to 0, this parameter is checked. 
If voIpProt.SIP.authOptimizedInFailover is 0, this feature is disabled. 
If both parameters are set, the value of reg.x.auth.optimizedInFailover takes precedence. 










