Fxs Coefficient File - AudioCodes MP-124 User Manual

An example of a Dial Plan file in ini-file format (i.e., before converted to *.dat) that contains
two dial plans is shown below:
; Example of dial-plan configuration.
; This file contains two dial plans:
[ PLAN1 ]
; Define the area codes 02, 03, 04.
; In these area codes, phone numbers have 7 digits.
02,7
03,7
04,7
; Define the cellular/VoIP area codes 052, 054, 050, and 077.
; In these area codes, phone numbers have 8 digits.
052,8
054,8
050,8
077,8
; Define the international prefixes 00, 012, 014.
; The number following these prefixes may
; be 7 to 14 digits in length.
00,7-14
012,7-14
014,7-14
; Define the emergency number 911.
; No additional digits are expected.
911,0
[ PLAN2 ]
; Define the area codes 02, 03, 04.
; In these area codes, phone numbers have 7 digits.
0[2-4],7
; Operator services starting with a star: *41, *42, *43.
; No additional digits are expected.
*4[1-3],0
8.4

FXS Coefficient File

The FXS Coefficient file (Coeff_FXS.dat) is used to provide best termination and
transmission quality adaptation for different line types for FXS interfaces. This adaptation is
performed by modifying the telephony interface characteristics (such as DC and AC
impedance, feeding current, and ringing voltage). The coeff.dat auxiliary file is produced
specifically for each market after comprehensive performance analysis and testing, and can
be modified on request. The current file supports US line type of 600 ohm AC impedance
and 40 V RMS ringing voltage for REN = 2. To load the coeff.dat file to the device, use the
Web interface or specify the FXS coeff.dat file name in the device's ini file (refer to
''Loading Auxiliary Files'' on page 168).
The Coeff.dat file consists of a set of parameters for the signal processor of the loop
interface devices. This parameter set provides control of the following AC and DC interface
parameters:
DC (battery) feed characteristics
AC impedance matching
Transmit gain
Receive gain
Hybrid balance
SIP User's Manual 374
MP-11x & MP-124
Document #: LTRT-65412