part of an inbound number, however individually or
combinations of both never fully match the complete
inbound number.
Both inbound Prefix and Suffix can be defined under

Dialplan entry details

. When

Use Remainder

, is

active the previously mentioned “remainder” will be
appended to and precede the

Prefix

and the

Suffix

of the outbound number, respectively. The outbound

Prefix

and

Suffix

precede and append, respectively,

the “remainder” as to form the complete outbound
number.
The latter prefix and suffix can be defined under

Arguments

. Prefixes and suffixes are standard

parameters of dial plans.
Suppose, as an example, in the

Dialplan entry details

the inbound Prefix equals 9876 and inbound suffix
equals 54. In the

Arguments

settings the outbond

prefix equals 1234. For an inbound connection to
phone number 9876154 the 3G Gateway will strip the
prefix 9876 and the suffix 54 from the called number,
hence the remainder equals 1. For the outbound
connection the 3G Gateway will add the prefix
(configured in arguments) in front of the remainder,
hence the outbound number equals 12341.
For the same settings with an inbound number
9876254 results in an outbound number 12342.
In case the prefix and/or suffix fully match the
inbound number the remainder will be empty and the
useremainder value will be ignored.

Net type.

Either

H.324m

H.323

SIP

of the

outbound call.

AV mode.

This mode determines the outbound audio

and video call settings. It is either

Audio Only

Audio

+ Video

Auto(matic) no fallback to audio

Auto +

fallback to audio

and

Auto + always fallback to

audio

In the

•

Audio Only

mode a voice call is being setup,

even when all endpoints support both audio and
video capabilities. Note that this setting will be
overruled in case Allow Forwarding is set to Yes and
both endpoints possess audio and video capabilities.

In the

•

Audio + Video

mode a call is only being

setup when endpoints support both audio and
video capabilities and a call with both these
capabilities can be set up.

In the

•

Auto

mode a call is being setup according

to the capabilities of the endpoints. Of the latter,
3 versions can be distinguished: no fallback to
audio, fallback to audio or always fallback to audio.

In the

•

no fallback to audio

case either an

audio

+ video

or an audio only call is being setup,

depending on the capabilities choice of the
initiating endpoint, i.e. when an

audio + video

call

is being set up, whereas the receiving endpoint
only supports audio, the call is terminated.

In the

•

fallback to audio

case capabilities can be

changed to an audio only call when the receiving
endpoint supports only audio, even when an

audio +

video

call is being set up by the initiating endpoint.

The

•

always fallback to audio

case is used in case

the telephony switch interferes or cannot handle
capability renegotiation, therefore when an

audio

+ video

call fails automatically an audio call will be

set up.

Prefix.

Specifies the first part, i.e. the part

preceding the remainder, of the outbound
number. The outbound prefix can be
defined under

Arguments

Suffix.

Specifies the last part, i.e. the part

appended to the remainder, of the Outbound
number. The outbound suffix can be defined
under

Arguments

Use sub number.

The sub number is a number

extension following the main number separated from
the main number by an

. In this way a number plan

behind a main number can be reached directly.

Allow forwarding.

After call setup the

call is offloaded from the 3G Gateway
system, i.e. not routed via the 3G Gateway
system any longer, to free resources.

No Media Sources can be added to DID
service.