SS-15 BRI (ISDN 2 GSM) USER MANUAL
DOC. NO: SS-15-14 (REV. 01)
Page 17 of 26
Figure 11. Configuring SS-15 via serial connection
Set the communication on the COM serial channel where the SS-15 BRI (ISDN
2 GSM) is connected.
Insert the diskette into the 3.5 inch diskette drive unit and copy the structure of
folders and files to the hard disk drive.
Run the ISDNCFG.EXE file from the folder on the hard disk
By means of the graphic interface of the configuration program begin to adjust
the SS-15 BRI settings (parameters for GSM modules, ISDN TE and NT
interfaces, routing table, CLIP table, name of connection, etc.)
Establish the settings according to the routing functions that the application
requires.
For details, refer to the Operating Manual for the Programming Tool. The
manual includes several examples of configuration of parameters for usual
applications.
5.
OPERATION AND MODES OF CONNECTION
5.1
ROUTING FOR LEAST COSTS
No matter which mode of connection is used, the purpose of the SS-15 BRI is to
achieve Least Cost Routing of calls. The LCR function of the SS-15 BRI (ISDN 2
GSM) interface ensures that in each case calls (incoming or outgoing) are
routed through the direction with minimum costs. For example, if a local
subscriber of the PBX makes a call, the prefix will be analyzed and the call will
be routed accordingly, either to the public ISDN network or to one of the GSM
operators. This way, instead of paying for a fixed-to-mobile call, there will only be
the low cost of a fixed-to-fixed of mobile-to-mobile call inside the same network.
This holds true also for calls coming in from agents in the field who make calls
from mobile phone - they will pay just for a mobile-to-mobile call, avoiding
interconnection fees. Using the DISA feature, the mobile callers may get the
extension they want, without need for a human operator of the PBX.
Alternatively, the two GSM channels of the SS-15 BRI may feature SIM cards for
the same mobile provider, but with different subscriptions. The Programming
Tool will select the best subscription for any given moment of time (for example,
the operator that provides lower tariff by night or during weekends).
Another instance of getting lower tariff by using the SS-15 BRI is when several
subscribers of the PBX make calls to a certain mobile provider. Since most of
the calls to that provider will be routed through a specific GSM module of the
