
B
FXS VOICE
A
PPLICATION
MODULE
Applications The FXS Voice application module is used to interface up to six pieces of analog
telephone equipment (telephones or key equipment) to a T1 facility (DS0). Refer
to Figure B-1.
The module supports loop or ground start signalling (covered in the following
paragraphs). These signals are converted to robbed bit A/B T1 signalling.
The FXS voice application module supports:
✦ Receive loss of 0 dB to −11 dB
✦ Transmit −4.0 dB fixed
✦ Sequential bandwidth (DS0s)
✦ µ-law PCM encoding
Key
PABX
PRISM 3030
T1/FT1
2-wire
analog
lines
System
TRANSPORT
Telco Dial Tone
IN/OUT WATS
AT&T, MCI, Sprint, etc.
Figure B-1 FXS Voice Module Applications
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