Polycom IP 320 Administrator's Manual page 192

Administrator's Guide for the SoundPoint IP / SoundStation IP / VVX Family
Attribute
voIpProt.SIP.useSendonlyHold
voIpProt.SIP.lcs
voIpProt.SIP.ms-forking
voIpProt.SIP.sendCompactHdrs
voIpProt.SIP.keepalive.
sessionTimers
voIpProt.SIP.requestURI.E164.
addGlobalPrefix
A - 12
Permitted
Values Default
0 or 1 1
0 or 1 0
0 or 1 0
0 or 1 0
0 or 1 0
0 or 1 0
Interpretation
If set to 1, the phone will send a reinvite with
a stream mode attribute of "sendonly" when a
call is put on hold. This is the same as the
previous behavior.
If set to 0, the phone will send a reinvite with
a stream mode attribute of "inactive" when a
call is put on hold.
NOTE: The phone will ignore the value of this
parameter if set to 1 when the parameter
voIpProt.SIP.useRFC2543hold is also set
to 1 (default is 0).
If set to 1, the proprietary "epid" parameter is
added to the From field of all requests to
support Microsoft Live Communications
Server.
If set to 0, support for MS-forking is disabled.
If set to 1, support for MS-forking is enabled
and the phone will reject all Instant Message
INVITEs. This parameter is relevant for
Microsoft Live Communications Server
server installations.
Note that if any end point registered to the
same account has MS-forking disabled, all
other end points default back to non-forking
mode. Windows Messenger does not use
MS-forking so be aware of this behavior if
one of the end points is Windows Messenger.
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'.
If set to 1, the session timer will be enabled.
If set to 0, the session timer will be disabled,
and the phone will not declare "timer" in
"Support" header in INVITE. The phone will
still respond to a re-INVITE or UPDATE. The
phone will not try to re-INVITE or do UPDATE
even if remote end point asks for it.
If set to 1, '+' global prefix is added to E.164
user parts in sip: URIs:.