Obihai OBi110, Administration Manual

Page: 95 / 202

Copyright 2010-2012 Obihai Technology, Inc. 95
If the URI contains ‘@’, it is used in the TO and FROM
header as well as the Request-URI as is
Note that OBi device forms the Request-URI of SUBSCRIBE
the same way as the TO header, with an additional port
number
X_MWISubscribeExpires X_MWISubscribeExpires: periodic interval to renew
SUBSCRIBE (default 3600s) 3600
X_ProxyServerRedundancy Enable proxy redundancy feature on the device. To use this
feature, device registration must be enabled and the SIP
Registration Server or Outbound Proxy Server must be
configured as a domain name No
X_SecondaryRegistration Enable device to register with a secondary server in
addition to the primary server. X_ProxyServerRedundancy
must be enabled for this parameter to take effect No
X_CheckPrimaryFallbackInterval Interval in seconds at which the device should check the
primary fallback list of candidate servers 60
X_CheckSecondaryFallbackInterval Interval in seconds at which the device should check the
secondary fallback list of candidate servers
60
X_ProxyRequire If this parameter is not blank, OBi will include 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 OBi 70
X_AcceptLanguage If this parameter is not blank, OBi will include an Accept-
Language header stating the value of this parameter in all
SIP requests sent to the ITSP.
X_DnsSrvAutoPrefix Enable this option to let OBi 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_Support100rel
3
Enable this option to turn on the support for RFC3262
(reliable provisional SIP responses). If enabled, OBi will
announce this support in a SIP Supported header, and will
require a caller to use this option if the caller also supports
this feature. No
X_DiscoverPublicAddress Enable this option to let the OBi use the public IP address
and port it has discovered as its SIP Contact address Yes
X_PublicIPAddress A static public IPv4 address, if specified, will be used by the
OBi to form its SIP Contact address
X_UseRport Enable this option to let the OBi 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 OBi Yes
3
This feature is available on the OBi202, OBi302 only