Welltech SIPPBX 6200A - Manual (Page 21)

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Dial Plan Define the dialing plan for Trunk. It specifies the location of the
instruction used to control what the phone is allowed to do, and
what to do with incoming calls for this Trunk. In this field, you
can Choose 6 dial levels for Extension, including [from-pstn],
[ext-only], [ext+R1], [ext+R12], [ext+R123], [ext+allroutes].
You can define an “Outgoing call” record to a certain route
level, such as R1, R2…, etc. [from-pstn] is used for Trunk only.
[ext-only] means this subscriber can only call to Extension.
[ext+R1] means the subscriber with such Dial Plan can call to
Extension and Route Level with R1. [ext+R12] means the
subscriber with such Dial Plan can call to Extension and Route
Level with R1 and R2. [ext+R123] means the subscriber with
such Dial Plan can call to Extension and Route Level with R1, R2
and R3. [ext+allroutes] means the subscriber with such Dial
Plan can call to Extension and Route Level with R1, R2, R3 and
R4 (allroutes).
Note: For more information about Route Level, please refer to
the user manual: CH3.1.8 Outgoing Routing.
Keypad User can select Keypad type to be RFC2833, In-band, or
SIP-Info and Auto. You can choose Auto to auto select the
Keypad type. Choose RFC2833, Inband or SIP-Info here will
force the Extension to use RFC2833, Inband or SIP-Info
accordingly and the setting should be also matched the Keypad
setting of Trunk device.
NAT Traversal If the Trunk device is behind a device performing NAT, such as
firewall or router, and need to register to SIPPBX 6200A on
public network, then user has to enable this function. Enable
NAT Traversal to force SIPPBX 6200A to ignore the contact
information for the Trunk and use the address from which the
packets are been received.
Port You can use this to define the SIP signal port if you want to
listen on a nonstandard SIP signal port.
External Server
Address This field will allow you to set the domain in the SIP From URI.
Setting this will avoid some unexpected issue if the service
provider needs this for authentication.
Maximum Channels This will limit the maximum channels for this Trunk. For
example, you set 2 into this field; only 2 outgoing calls could go
via this Trunk. Default is no limit.
Outbound Caller ID Some service provider will require the correct registered caller
ID if it got an incoming call. SIPPBX 6200A will send the