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Technical Configuration MultiVOIP User Guide
116
SIP Call Signaling Parameter Definitions
(cont’d)
Field Name Values & Description
SIP Proxy Parameters
Password Values: alphanumeric
Description: Password for proxy server
function. See “User Name” description
above.
Re-
Registration
Time
Values: numeric (in seconds)
Description: This is the timeout interval for
registration of the MultiVOIP with a SIP
proxy server. The time interval begins the
moment the MultiVOIP gateway registers
with the SIP proxy server and ends at the
time specified by the user in the Re-
Registration Time field (this field). When/if
registration lapses, call traffic routed to/from
the MultiVOIP through the SIP proxy server
will cease. However, calls in progress will
continue to function until they end.
Proxy Polling
Interval
integer
60 - 300
The interval between the voip
gateway’s successive attempts
to connect to and be governed
by a higher level SIP proxy
server. The Primary Proxy is
the highest level gatekeeper.
Alternate Proxy 1 is second;
Alternate Proxy 2 is the lowest
order SIP proxy server.
TTL Value
in seconds
The SIP proxy “Time to Live” value. As soon as a
MultiVOIP gateway registers with a SIP proxy
server (allowing the proxy server to control its call
traffic) a countdown timer begins. The TTL Value
is the interval of the countdown timer. Before the
TTL countdown expires, the MultiVOIP gateway
needs to register with the gatekeeper in order to
maintain the connection. If the MultiVOIP does
not register before the TTL interval expires, the
MultiVOIP gateway’s registration with the proxy
server will expire and the proxy server will no
longer permit call traffic to or from that gateway.
Calls in progress will continue to function even if
the gateway becomes de-registered.