User guide

TalkAnytime User Guide Technical Configuration
9
7
E1 Parameter Definitions
Field Name Values Description
T1/E1/ISDN E1 European 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)
-- Not applicable to E1.
Frame Format Double Frame;
MultiFrame
(with CRC4);
MultiFrame
(w/CRC4,
modified)
Frame Format of TalkAnytime should match that used by
PBX or telco.
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
MFR2ITU
MFR2 China
MFR2 ANI
Channel Associated Signaling (CAS) is a method of
incorporating telephony signaling info into an E1
voice/data stream. In CAS, the signaling bits (the A, B, C,
and D bits) are multiplexed into the signal stream of each
E1 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 VOIP to interact
properly with the PBX or central-office switch that it
serves. The need to download CAS protocols arises for
only a small minority of VOIP users, and only when
PBX/switch is found to be incompatible with standard
protocols.
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 FXS Loop Start or FXS
Ground Start is selected as the CAS protocol.