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MultiVOIP User Guide Technical Configuration (Digital Voips)
149
T1 Parameter Definitions
Field Name Values Description
T1/E1/ISDN T1 North American 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.