Nortel Passport 4430, Hardware Installation, Page: 75 / 176

Analog Voice Modules Passport 4400 Hardware Installation Manual
6-19
Voice/Fax Switch Module
There are four interface connectors available on the back panel of the Voice/Fax
Switch Module (NTAU52AA), as shown in Figure 6-21 below. Three are modular
RJ-11 jacks labelled FXS, FAX, and PSTN, respectively. The fourth is an 8-pin
terminal block.
Where possible, use the modular jacks to make your FXS/FAX/PSTN interface
connections; cables are supplied.
If your installation is not suited for modular connection, the terminal block is
an alternate choice. Use a color-coded cable (not supplied) to make your
connection (see Figure 6-12 on page 6-10).
Figure 6-21. Voice/Fax Switch Module Cable Connections
Caution: !
Voice/Fax Switch interface straps are preset at the factory to
match the memory installed and must not be altered by the user
Caution:
!
The interface module must not be inserted into, or removed from
the unit, while the unit is operating. This could cause damage to
the unit or cause interruption of network services or both.
FXS
FAX
RPTPRF TF
RPTPRF TF R T
R T
PSTN
3-
P
O
R
T
RP = Ring, Phone
TP = Tip, Phone
RF = Ring, Fax
TF = Tip, Fax
R = Ring, PSTN
T = Tip, PSTN
RJ-11
RJ-11
Terminal Block