ADTRAN 1200300L1, Руководство пользователя

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Chapter 3. Operation
3-8 FXS+ Quad & Dual Voice Option Module User Manual 61200300L1-1
other options to be selected. These options are Supervision
on page 3-11, Dial Tone on page 3-11 , Loop Reverse Battery
on page 3-11, Ringback on page 3-11 , DNIS Delay page 3-12
and DNIS Wink Timeout on page 3-12 .
Ringing cadence for incoming calls is two seconds on, four
seconds off
.
TANDEM_GS
This mode sets the port to use E&M signalling on the T-Span
and ground start supervision on the analog 2-wire interface.
Ground-start operation is often used with trunk interfaces to
PBX and key systems to prevent glare conditions.
Appropriate
TANDM OPTIONS must be chosen in this mode
as described for TANDEM_LS .
Ringing cadence for incoming calls is two seconds on, four
seconds off
.
PLAR
This mode sets the port to use PLAR signalling on the T-Span
and loop-start supervision on the analog 2-wire interface.
This mode is used to provide a point-to-point hot line so that
when one telephone is lifted off-hook, the telephone at the
other end rings until it is also picked up.
When both ends are off-hook, a direct point-to-point
connection is established. Ringing cadence is two seconds
on, four seconds off
.
The Loop Reverse Battery is not applicable in this mode.