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Using VoIP Gateway features 107
Norstar VoIP Gateway Configuration Guide
Using VoIP Gateway features
Table 17 lists some common features on the VoIP Gateway and describes which INI file parameter
you must set in order to use that feature.
Table 17 Using the VoIP Gateway features
Feature Parameter Value
Use given
Gatekeeper IsGatekeeperUsed 1
GatekeeperIp
Single IP address if a single Gatekeeper is used.
Two or three IP addresses if the Redundant Gatekeeper option is enabled. IP
Redundant
Gatekeepers IsRedundantGKUsed
Specify the list of gatekeeper IP addresses using GatekeeperIp parameter.
The VoIP Gateway starts working with first Gatekeeper on the list. If the first
Gatekeeper fails, the VoIP Gateway tries to communicate with the other
Gatekeepers on the list. After a Gatekeeper is found, the VoIP Gateway
continues working with that Gatekeeper until the next failure. If none of the
Gatekeeper respond, the VoIP Gateway tries the list again. 1
No Gatekeeper,
use routing
table IsGatekeeperUsed 0
Define routing table using:
a. PREFIX = prefix, <IP address> list
b. Prefix = *, <IP address> Phone numbers,
Prefixes and IPs
When a Gatekeeper is not used, it is necessary to define the IP routing table.
This routing table enables the VoIP Gateway to find the destination IP address
according to received dial number.
The routing table is defined in the INI file, using PREFIX or per phone number
definitions. The gateway first searches for Phone table to find a destination IP
address, then it looks for a Prefix parameter, and later for a ”Prefix = *,<IP
address>" definition.
“Prefix = *, <IP address>“ defines the destination IP address for any other phone
number.
Fall Back to
internal
routing table IsGKFallbackUsed
Gateway starts using internal routing table (phone to IP, or prefix to IP) if
communication with Gatekeeper is lost. Gateway returns to Gatekeeper when
communication is restored. 1
Set numbers to
end points Channel2Phone= <channel>,<phone>
or ChannelList = port, number, phone Phone numbers
The easiest way to define endpoint phone number is to use ChannelList
parameter. For example, to define 101 to 104 numbers use a single line:
ChannelList = 0,4,101.
The first parameter (0) indicates the first endpoint number.
The second parameter (4) indicates the number of endpoints.
The third parameter (101) indicates the first endpoint phone number.
Up to ten such ChannelList definitions can appear in the same the INI file.
One or more phone numbers in the ChannelList can be modified by using
Channel2Phone definition, following the ChannelList parameter in the INI file.
Dial plan MaxDigits
Maximum number of digits in a dialed number. Max digits
TimeBetweenDigits
The Timeout between dialed digits is used to terminate dialing. Usually it is set to
4 seconds. Time in seconds