User guide

Chapter 5 — Phonebook Configuration
Multi-Tech Systems, Inc. 66
Field Name
Values
Description
Port Number
numeric
When operating in “Registrar/Client” mode, this is the port by which the gateway
receives all SPP data and control messages from the registrar gateway. (This ability to
receive all data and messages via one port allows the VOIP to operate behind a firewall
with only one port open.)
When operating in “Direct” mode, this is the Port by which peer VOIPs receive data and
messages.
Alternate Phone
Number
numeric
Phone number associated with alternate IP routing.
Remote Device
is [legacy VOIP]
Y/N
When checked, this MultiVOIP can operate with ‘first-generation’ MultiVOIP units in the
same IP network. These include MVP-110/120/200/400/800.
Advanced
button
Gives access to secondary screen where an Alternate IP Route can be specified for backup or redundancy of
signal paths. For SIP & H.323 operation only.
Click on Advanced to bring up the Alternate Routing screen. This provides an alternate path for calls if the
primary IP network cannot carry the traffic. Often in cases of failure, call traffic is temporarily diverted into the
PSTN. However, this feature could also be used to divert traffic to a redundant (backup) unit in case one VOIP
unit fails. The user must specify the IP address of the alternate route for each destination pattern entry in the
Outbound Phonebook.
Advanced button
Alternate Routing Field Definitions
Field Name
Values
Description
Alternate IP
Address
n.n.n.n
Alternate destination for outbound data traffic in case of excessive delay in data
transmission.
Round Trip
Delay
Default is 300
milliseconds
The Round Trip Delay is the criterion for judging when a data pathway is considered blocked.
When the delay exceeds the threshold specified here, the data stream will be diverted to the
alternate destination specified as the Alternate IP Address.