User`s guide
Polycom VVX Expansion Module Administrator’s Guide Addendum  UC Software 4.1.6 
Polycom, Inc.  17 
Enable Multiple Line Registrations 
Polycom phones can have multiple registrations; each registration requires an address or phone number. 
All VVX phones support up to 48 registration line keys and up to 34 line registrations when connected to 
three expansion modules. 
You can assign each registration to one or more line keys. Note that you can use a line key for only one 
registration. You can select which registration to use for outgoing calls. This feature is one of several 
features associated with Flexible Call Appearances. 
Enabling Multiple Registrations 
Central Provisioning Server ................................................................................................ template > parameter 
Specify the local SIP signaling port and several optional SIP servers to register to. For each server, specify the 
registration period and the signaling failure behavior. 
 .......................................................................................... sip-interop.cfg > voIpProt.SIP.* and voIpProt.server.x.* 
Specify a display name, a SIP address, an optional display label, an authentication user ID and password, the 
number of line keys to use, and an optional array of registration servers. The authentication user ID and password 
are optional and for security reasons can be omitted from the configuration files. The local flash parameters will be 
used instead. The optional array of servers and their parameters will override the servers specified in 
<voIpProt.server/> if non-Null. 
 .............................................................................................................. reg-basic.cfg, reg-advanced.cfg > reg.x.* 
Web Configuration Utility 
Specify the local SIP signaling port and several optional SIP servers to register to. 
Specify a display name, a SIP address, an optional display label, an authentication user ID and password, the 
number of line keys to use, and an optional array of registration servers. The authentication user ID and password 
are optional and for security reasons can be omitted from the configuration files. The local flash parameters are 
used instead. The optional array of servers will override the servers specified in <server/> if non-Null.  
Configure multiple registrations by navigating to Settings > Lines. 
Local Phone User Interface 
Use the Call Server Configuration and Line Configuration menu to specify the local SIP signaling port, a default 
SIP server to register to, and registration information for up to 12 registrations (depending on the phone model). 
These configuration menus contain a subset of all the parameters available in the configuration files. 










