Telos TWOx12 - Page 31

TELOS TWOX12 USER’S MANUAL
INSTALLATION
CHAPTER 2 19
ISDN TWOx12 Version
The ISDN version of the TWOx12 has Telco interface cards in slots A, B, & C. Each interface
supports two ISDN BRI circuits. Since each BRI circuit has two Telco channels (or “Lines”) there
are 4 channels per BRI interface card. The ISDN jacks on the rear panel may be either RJ-45 or
RJ-11 style depending on the country.
The correspondence between the interface slot to the system “Line” number for an ISDN
TWOx12 is illustrated in the following table:
Slot Designation Circuit # Channel ID #
(Telephone #)
System “Line” #
A Top1
A Top2
1
1
DN/MSN 1
DN/MSN 2
1
2
A Bot1
A Bot2
2
2
DN/MSN 1
DN/MSN 2
3
4
B Top1
B Top2
3
3
DN/MSN 1
DN/MSN 2
5
6
B Bot1
B Bot2
4
4
DN/MSN 1
DN/MSN 2
7
8
C Top1
C Top2
5
5
DN/MSN 1
DN/MSN 2
9
10
C Bot1
C Bot2
6
6
DN/MSN 1
DN/MSN 2
11
12
This table shows the relationship between the TWOx12’s connectors, the Telco circuits
and the system “line” number for the ISDN TWOx12. See section 3 for a form to organize
this information prior to programming your system.