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MultiVOIP User Guide Technical Configuration
195
SIP Server Configuration Parameter Definitions
Field Name Values Description
Operating
Mode
surviv.,
stnd-alone
In “Survivability” mode, the MVP-SS
unit can function as a SIP server for
other gateways in its network in case
that network loses contact with the
network’s main SIP server (typically a
PBX). When in “Survivability” mode,
the MVP-SS unit is, essentially, a
backup SIP server.
In “Stand-Alone” mode, the MVP-SS
functions as a primary SIP server for
other gateways. In stand-alone mode,
the MVP-SS operate to technical
advantage with ‘smart’ SIP phones.
Such smart SIP phones can choose the
SIP server under which they operate
and, consequently, can be controlled
by either the SIP-based PBX or by the
MVP-SS.
Survivability
Status Check
Register,
Options
One of two status-check packets is
sent to the main SIP Proxy servers to
which the MVP-SS serves as a backup.
Regardless of the packet type used,
this packet determines whether the
MVP-SS needs to take over SIP server
functions or stay in its normal backup
mode. “Options” and “Register” are
two distinct SIP request “methods.”
The Options method solicits
information but does not set up a
connection. The Register method
conveys information about a user’s
location to the SIP server. The
“Register” method may entail more
data overhead than the “Options”
method. If both of these methods are
supported by your SIP server, it is OK
to use either one. If only one is
supported, use the supported method.