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Technical Configuration MultiVOIP User Guide
92
T1 Parameter Definitions
Field Name Values Description
T1/E1/ISDN T1 North American digital
telephony standard.
Long-Haul
Mode
Y/N In Long-Haul Mode, the
MultiVOIP automatically
recovers received signals as low
as –36 dB. The maximum
reachable length with 22 AWG
cable is 2000 meters. When
Long-Haul Mode is disabled,
signals as low as –10 dB can be
received.
Default: disabled.
CRC Check
(Cyclic
Redundancy
Check)
Y/N When enabled, allows
generation and checking of
CRC bits. If not enabled, all
check bits in the transmit
direction are set. Only applies
to ESF frame format.
Default: enabled.
Frame Format F4, D4, ESF,
SLC96
Frame Format of MultiVOIP
should match that used by PBX
or telco. ESF and D4 are
commonly used.