User`s guide
Polycom VVX Expansion Module Administrator’s Guide Addendum  UC Software 4.1.6 
Polycom, Inc.  57 
Parameter 
Permitted Values 
Default 
voIpProt.SIP.requestValidation.x.method
1
Null, source, 
digest, both, all 
Null 
If Null, no validation is made. Otherwise this sets the type of validation performed for the request: 
- source  Ensure request is received from an IP address of a server belonging to the set of target registration 
servers. 
- digest  Challenge requests with digest authentication using the local credentials for the associated registration 
(line). 
- both or all  Apply both of the methods. 
voIpProt.SIP.requestValidation.x.request
1
INVITE, ACK , 
BYE, 
REGISTER, 
CANCEL, 
OPTIONS, 
INFO, 
MESSAGE, 
SUBSCRIBE, 
NOTIFY, 
REFER, 
PRACK, 
UPDATE 
Null 
Sets the name of the method for which validation is applied. Note: Intensive request validation may have a 
negative performance impact due to the additional signaling required in some cases. 
voIpProt.SIP.requestValidation.x.request.y.event
1
A valid string 
Null 
Determines which events specified with the Event header should be validated; applicable only when 
voIpProt.SIP.requestValidation.x.request is set to SUBSCRIBE or NOTIFY. If set to Null, all events 
are validated. 
voIpProt.SIP.requestURI.E164.addGlobalPrefix 
0 or 1 
0 
If set to 1, + global prefix is added to the E.164 user parts in SIP: URIs. 
voIpProt.SIP.sendCompactHdrs 
0 or 1 
0 
If set to 0, SIP header names generated by the phone use the long form )for example, From). If set to 1, SIP 
header names generated by the phone use the short form (for example, f). 
voIpProt.SIP.serverFeatureControl.cf
1
0 or 1 
0 
If set to 1, server-based call forwarding is enabled. The call server has control of call forwarding. If set to 0, 
server-based call forwarding is not enabled. 
voIpProt.SIP.serverFeatureControl.dnd
1
0 or 1 
0 
If set to 1, server-based DND is enabled. The call server has control of DND. If set to 0, server-based DND is not 
enabled. 
voIpProt.SIP.serverFeatureControl.missedCalls
1
0 or 1 
0 
If set to 1, server-based missed calls is enabled. The call server has control of missed calls. If set to 0, server-
based missed calls is not enabled. 
voIpProt.SIP.serverFeatureControl.localProcessing.cf 
0 or 1 
1 
If set to 0 and voIpProt.SIP.serverFeatureControl.cf is set to 1, the phone will not perform local call-
forward behavior. If set to 1, the phone performs local call-forward behavior on all calls received. 










