Outgoing gsm call routing from internal isdn – 2N BRI Lite/Enterprise v1.7 User Manual

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Make sure that the apriopriate provider's SIM card is inserted in the GSM gateway.
Assign the incoming and outgoing groups in the Gateway configuration GSM

menu.

groups assignment

For a call setup, the LCR table is searched sequentially from top to bottom. Each LCR
table row is assigned a

in which the prefix match is searched for. If a match

Prefixlist

is found, the call will be routed according to the routing group parameters (

Groups

the LCR table) as set in the

table.

Gateway configuration GSM outgoing groups

The call will be connected via the GSM module as assigned to the GSM outgoing

in the

table.

groups

GSM groups assignment

If the selected GSM/UMTS module is busy, the call is routed according to the next
routing rule included in the

and defined by the

table.

Groups

GSM outgoing groups

Again, the

is assigned to a GSM module in the

GSM outgoing group

GSM groups

table.

assignment

The LCR row is checked in this way until a free GSM/UMTS module is found. If no
available GSM/UMTS module (

) is found, the call is rejected.

GSM outgoing groups

Outgoing GSM Call Routing from Internal ISDN

If the GSM/UMTS gateway is connected to a subscriber line of your PBX, you are
advised to enable the DISA function to GSM to make your GSM gateway answer every
call routed to it by the PBX and wait for further dialling to GSM networks.

The GSM/UMTS gateway routes outgoing calls to GSM as follows:

The calling subscriber dials a user number.
If the user dialling is evaluated as

, the gateway barred

Access to GSM gateway

number table is searched through and, if a match is found, the call setup request
is rejected.
With an outgoing call, the gateway waits for further digits to be dialled. This
timeout results in a certain delay between the subscriber's dialling and the
subsequent dialling by the GSM gateway. Therefore, select the Count of dialled

for the called destinations while configuring your gateway. Then, the

digits
gateway initiates the outgoing call processing algorithm on receiving the last
digit.
The dialling prefix is first checked against the prefixes included in the first row of
the LCR table. If no match is found, the following row is used for check and so
on.
In case the prefix and call time comply with the routing rules, the call is routed
according to the first LCR rule to the module corresponding to the particular

included in the

list.

Outgoing GSM group

Groups

Poznámka

Count of digits defines the minimum count of digits to be dialled. Hence,
a call is successful if the count of the called number digits is equal to or
higher than the value set in the

Count of digits

The

does not include the digits removed from/added to

Count of digits

the number in the Table of replaced prefixes.
The

set in the Table of accepted prefixes has a higher

Count of digits

priority than the

Default count of digits

The

must always contain one record at least

Table of replaced prefixes

or the

record if no prefix modification is made.

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