Parameter Reference Guide
Polycom, Inc.
69
X_ProxyRequire
If this parameter is not blank, the device includes a
Proxy-Require header stating the value of this
parameter in all SIP requests sent to the ITSP.
X_MaxForward
Value for the Max-Forward header in all SIP requests
sent by the device.
70
X_AcceptLanguage
If this parameter is not blank, the device includes an
Accept-Language header stating the value of this
parameter in all SIP requests sent to the ITSP.
X_DnsSrvAutoPrefix
Enables letting the device automatically prepend a
standard prefix to the domain name when querying
DNS Server to resolve the
ProxyServer
or
OutboundProxy
name as a SRV record. The
standard prefix is
_sip._udp.
for SIP over UDP,
_sip._tcp.
for SIP over TCP, and
_sip._tls.
for SIP over TLS.
No
X_UserEqPhone
Includes the parameter ‘user=phone’ in Request-URI
and To-URI of outbound INVITE.
No
X_CallWaitingIndication
Enables including an indication in an 18x response
to the calling peer if this is a call- waiting situation.
No
X_Support100rel
Enables support for RFC3262 (reliable provisional
SIP responses). If enabled, the device announces
this support in a SIP Supported header, and requires
a caller to use this option if the caller also supports
this feature.
No
X_DiscoverPublicAddress
Enables letting the device use the public IP address
and port it has discovered as its SIP Contact
address.
Yes
X_UsePublicAddressInVia
Enables using the discovered external IP address
(instead of the unit’s assigned local IP address) in
outbound Via header.
No
X_PublicIPAddress
A static public IPv4 address, if specified, is used by
the device to form its SIP Contact address.
X_UseRport
Enables letting the device insert a blank rport
parameter in the VIA header our outbound SIP
messages. This option should be turned off if you are
using port forwarding on the external router to route
inbound SIP messages to the device.
Yes
X_UseCompactHeader
Enables using compact form SIP message header
names.
No
ITSP SIP Settings Parameter Guide
Parameter
Description
Default Setting