User guide

Technical Configuration TalkAnytime User Guide
90
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 TalkAnytime 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 TalkAnytime should match that used by PBX or
telco. ESF and D4 are commonly used.
CAS Protocol E&M Immed Strt
E&M Wink Start
E&M Wink with
dial tone
FXO Ground Strt
FXO Loop Start
FXS Ground Strt
FXS Loop Start
Channel Associated Signaling (CAS) is a method of incorporating
telephony signaling info into a T1 voice/data stream. In CAS, the
signaling bits (the A, B, C, and D bits) are multiplexed into the
signal stream of each T1 channel. (By contrast, in Common Channel
Signaling (CCS), one channel handles signaling for all other
channels.) Each CAS protocol defines the states of the signaling bits
during the various stages of a call (IDLE, SEIZED, ANSWER, RING-
ON, RING-OFF).
The CAS protocol code allows the TalkAnytime to interact properly
with the PBX or central-office switch that it serves.
Match this parameter to the setting of PBX or central-office switch.
FXS Options –
No Response
Timer
1 – 65535
(in seconds)
Length of time before call connection attempt is abandoned.
Applicable only when an FXS CAS protocol is selected.