ELTEX SMG-2, Operation Manual, Page: 62 / 198

62 SMG digital gateway

Toll
8
—means that this signal link is connected to the ALDE. This parameter is used to ensure
correct operation with long-distance calls (used in transits to signalling CAS).

Alarm indication —when checked, a fault in SS-7 signal link results in fault indication (the ALARM
LED turns on and the fault is registered in the alarm log).

Channel selection —the order of channel engagement for outgoing calls. Available options:
–
sequential forward;
–
sequential back;
–
from the first and forward;
–
from the last and back;
–
sequential forward even;
–
sequential back even;
–
sequential forward odd;
–
sequential back odd.
To minimise the number of communication conflicts with adjacent PBXs,
inverse channel engagement types are recommended.

Reserve SS7 Linkset —the selected redundant SS-7 line group. When the main SS-7 line group is not
available, the exchange of signalling messages will be entirely performed through the redundant
SS7 line group.

Combined mode —the Combined Linkset mode which means that only voice streams are used in
this SS-7 line group, while signal channels of the primary and secondary SS-7 groups are used for
signalling.

Primary SS7 Linkset —the SS-7 line group selected by signal D-channels that will be used to
exchange the signalling messages related to this particular SS-7 line group.

Secondary SS7 Linkset —the second SS7 line group selected by signal D-channels that will be used
to exchange the signalling messages related to this particular SS-7 line group.
In the combined mode, the signalling load is evenly distributed (50/50)
between the primary and secondary SS-7 line groups.

SS7 Timers profile —the selected timer profile which will be used for this SS-7 line group.
MTP2 Level

Emergency alignment for a single signal link —enables emergency phasing during SS-7 line group
commissioning, if this SS-7 line group has a single signal link.
Service Information (SIO)

Network ID —specifies the network type: international, national, local network or reserve (usually,
the Local Network value is used in the Russian Federation).
Routing Label

Own point code (OPC)—the signalling point own code.

ISUP opposite code (DPC-ISUP) —code of the communicating signalling point of the ISUP
subsystem.
8
Not supported in the current version.