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a domain name (e.g.
myprovider.com
) but needs the actual IP address of the provider’s server. This is required for
matching as explained below. This is also the destination to which outgoing call requests will be sent.
If you are connecting the network with the trunk to the secondary Ethernet port, you should set this via
Show
Advanced->Network Port Binding->Secondary
.
Finally, a SIP trunk needs to determine which calls are from your provider, in order to process them to the correct
incoming phone line. This is done via a process called “matching”. The simplest form of matching is the default,
where the source address of incoming calls will be matched to the value in the
Server/Realm
field, and if correct,
the incoming call will be routed to the proper line.
In some circumstances, this setting isn’t correct and needs to be adjusted. You can access the matching settings by
clicking
Show Advanced
and looking under the
Extra Settings
section.
The two options of interest for trunks are:
1
Trunk Incoming Match Parameter
- Selects which field within the incoming call parameters
(sent at call setup time by the provider) is used for the match. This can be the
Network Ad-
dress
(default) or the
Destination Number
field.
2
Trunk Incoming Match
- This is the field where you enter the text that will be matched by the
system to the incoming call.
If the
Network Address
option is chosen, It’s OK to leave the
Trunk Incoming Match
field blank - this is the default
configuration, and the system will use the
Server/Realm
field entry for the match.
Alternately, you can input a different IP address to be matched, in the case where the source IP of the call is
different than the
Server/Realm
entry.
Alternately, if the
Destination Number
selection is chosen, the
Trunk Incoming Match
field must be populated. The
system will look at the
Destination Number
field of incoming calls and accept only calls with literal matching text.
This field can also be set as a “regular expression” for a dial plan, which is a more complex topic and can be handled
by Comrex support. As an example, entering the following value in the field:
^(1\d{3}555210\d)$
Would match the sequence “
1xxx555210x
” where “
x
” is any digit.
Note the “Destination Match” field is not used for SIP Trunks. This is used for registered providers only. Putting
information in this field for SIP Trunks may result in call failure.
Once created, the status of your SIP trunks will always show as “
registered
”. In the case of SIP trunks, this status is
meaningless, since no actual data has been received from the provider until a call is established.
Summary of Contents for VH2
Page 1: ...Product Manual ...
