|
|
 |
| |
|
 |
| |
VSC Voice and Signaling
Converter |
|
| |
- VSC is a voice and
signaling converter, enabling connection of voice
equipment to data communications equipment. VSC
converts the 2-wire/4-wire interface of the data
equipment to the FXS interface of a telephone set,
enabling direct connection of a telephone set to the
voice interface of a time division multiplexer.
- VSC is available as
either a stand-alone unit (VSC) or as a rack-mount
card (VSC/R).
- VSC provides FXS loop
start or ground start. The VSC/R provides FXS loop
start only.
- VSC and VSC/R
recognize the telephone pulses for on-hook, off-hook
and dialing, translate the pulses into the proper
signaling standard, and send the resulting signal
over the "M" lead. When detecting activity
on the "E" lead, VSC sends the ringing
signal to the telephone and the ring back tone to
the other side.
- The voice interface on
the E&M side is switch-selectable for either
2-wire or 4-wire operation. The voice level to and
from the telephone can be adjusted by means of a
gain control in the range of +9 dB to -9 dB. (Gain
control is not supported in the VSC/R.)
- The ring signal
towards the telephone is modulated for approximately
one second on, three seconds off, to simulate PABX
operation.
- VSC has internal
protection on the E&M lead to avoid damage in
the event of improper operation.
- The VSC/R cards fit
into the VSC-MN 19" card cage. The card cage
includes a power supply and can carry up to 12 VSC/R
cards in the AC option, or up to 14 cards in the DC
option. The VSC/R cards can be mixed with the VSC-X/R
(FXO) cards.
|
|
|
| |
Can't
find what you need ? Call or Email
now ! |
|
|
