PRINCIPLES OF ARS MECHANISMS CALL SERVER : PRIVATE NETWORKS
Ed. 042/18 Réf. 3EH 21000 BSAA
CONFIGURING ARS PARAMETERS
ARS is implemented when the "Base" field is empty for the "Main trunk group seizure" and "Secondary
trunk group seizure" features in the main numbering plan and the numbering plans for private and
public incoming calls.
Main numbering plan
Base: if this field is empty, the call is of type ARS; if not, it is a trunk group call.
NMT: this field defines whether the digits defined in the "Start" and "End" fields are absorbed or con-
served.
Priv: this field is a reference for the "Network" parameter in the ARS table:
- Yes: the outgoing number in the numbering plan is compared to the entries in the ARS table with
"Network" = Private.
- No: the outgoing number in the numbering plan is compared to the entries in the ARS table with
"Network Identifier" = Public, Urg. or Code auth.
After analysis and possible modification by the NMT, the outgoing digits in the numbering plan are
entered in the ARS table.
ARS TABLES
The installer determines the numbers or parts of numbers in front of the ARS handling. For each des-
tination defined by a prefix, it creates a "trunk group list". For each index in the list, it is possible to
assign one or several trunk groups and commands for modifying the dialing.
The ARS prefix replaces the external seizure prefix. On recognition of the prefix, the system determines
the associated "trunk group list". The ARS mechanism therefore uses the route by activating the call on
the corresponding trunk group. If the trunk group is busy, the next programmed route is used.
Nota : In some instances, the equivalent French acrostic "ADL" may be found instead of "ARS".
Start End Base Function NMT Private
XXXX XXXX Main trunk group Keep or
Drop
Yes/No
XXXX XXXX Secondary trunk groups Keep or
Drop
Yes/No
Number
dialled
Number
transmitted
ARS
TABLE
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