Comtech EF Data NetPerformer SDM-9 Series, Руководство по установке оборудования, Страница: 50 / 136

SDM-9XXX Series Hardware Installation Guide
3-24 Memotec Inc.
leads of the analog voice port straight through, without crossing.
NOTE:
All signals are listed from the PBX’s point of view.
NOTE:
All signals are listed from the PBX point of view.
Figure 3-11: Four-Wire E&M Connections
Figure 3-12: Two-Wire E&M Connections
PBX-to-PBX Connection

E M
M E

PBX
T1 T

R1 R


T T1

R R1
PBX
E

7 2

M
M

2 7

E
R1

3 4

R
PBX
R

4
NP
3

R1
PBX
T

5 6

T1
T1

6 5

T
NP
Connection Through SDM-9120/9220/
Connection Through SDM-9120/9220/
E

7 2

M
M

2 7

E
PBX
R

4 4

R
PBX
T

5 5

T
NP NP