TD 92326GB
2009-03-10 / Ver. E
Installation and Operation Manual
VoIP Gateway
53
3
Click “OK”.
9.1.2
Interop –
Interoperability with Other Equipment
The menu normally does not have to be adjusted. This is only necessary if, for example,
malfunctions occur when transmitting H.323 calls.
Not all ISDN implementations are prepared to receive certain standard-compliant
information elements (referred to as IEs). Such IEs can be created, for example, when
linking up different PABXs or transmitting H.323 calls to an ISDN interface and vice-versa.
If malfunctions are caused by the transmission of certain IEs, the gateways can be made to
remove such IEs from the transmitted messages.
1
Select PRIn > Interop.
Figure 48. Interoperability with other equipment
2
Select/Enter the following settings.
• Channelbank mode
If a VoIP Gateway if configured as channelbank it
converts the T1 to 24 IP phone lines.
Channelbank mode may be used also (with 30 channels)
on an E1 line.
The channelbank mode only applies to CAS applications.
In the channelbank mode, each CAS channel is fixed
assigned to a telephone number and is not dynamically
assigned as in trunk scenarios. The CAS interface then is
connected to a channelbank. E.g. telephone with
number 1 calls to the CAS interface, channel 1 is taken
for this call. If telephone with number 3 calls, channel 3
is taken and so on (this is normally done with maps in the
routing table). It is similar in the incoming direction. If a
call comes in on channel 1, it is transferred to the
telephone with number 1 (or via maps in the routing
table).
Figure 56.
Field name
Description
• Automatic Keypad
Enables Automatic Keypad sending i.e. if the first dialed
digit to be sent on this interface is either '*' or '#' the
digits are not sent as called party number, but as Keypad
information instead. This is used on some ISDN networks
for non call related supplementary services (for example
*21No# to set call forwarding).
