Hardware manual

Issue 8 Electra Elite
3 - 6 Hardware Requirements
7.2.1 Determining Telephone and CO Port Numbers
Telephone and CO Ports numbers are provided with the
Electra Elite 192 system to count the station numbers and
trunk numbers when programming System Data. The
example below indicates how the CO and trunk numbers
can be used.
The following ETUs are installed for the Figure 3-2
Telephone and CO Port Numbering Example.
Slot ETU
S1 DTI-U( ) (16 channels used)
S2 Open
S3 ESI(8)-U( )
S4 TLI(2)-U( )
S5 COI(8)-U( )
S6 SLI(8)-U( )
S7 DID(4)-U( )
S8 Open
Figure 3-2 Telephone and CO Port Numbering Example
CO
Ports
1 ~ 8
Open
CO
Ports
9 ~
16
Telephone
Ports
1 ~ 8
CO
Ports
17 ~ 18
CO
Ports
19 ~ 26
Telephone
Ports
9 ~ 16
CO
Ports
27~ 30
Open
S1 S2 S3 S4 S5 S6 S7 S8