System Parameters - Matrix Telecom SIMADO GBR42 System Manual

What's this?
A Law/Mu Law:
• Some parameters of the Gateway are not to be programmed for
the specific Mobile, NT or TE port. These are programmed as
System Parameters. For example, a companding method is
programmed for the gateway.
• Companding is a method of improving the signal-to-noise (S/N)
ratio resulting from the pulse code modulation (PCM) process on
voice calls. The analog signal's amplitude is compressed before it
is quantized and transmitted. Either of two algorithms are used to
compand voice band signals for a specific country: A-Law or Mu-
Law.
• For India A-Law will be programmed.
Replacing '+' by digits in CLI:
• The GSM network usually presents the calling party number with
prefix as '+', to the called party. On receipt of call on Mobile port,
few terminal equipments are unable to represent the calling party
number if it contains '+'.
• Hence, the Matrix GBR42 supports the command, to replace '+' of
the CLI number, with the programmable digits and is presented on
the terminal equipment connected on the BRI-NT/TE as applicable.
• '+' can be replaced with maximum 6 digits.
End of Dialing Digit:
• End of dialing digit is a mechanism by which end of number string
is interpreted by the system and processing for out dialing is faster.
• User can decide whether to use '#' as end of dialing digit, using
specific command.
• If end of dialing flag is set, the GBR42 will consider '#' as end of
dialing digit and if '#' is dialed as the First Digit, it will not be
considered as end of dialing digit.
• When IDWT (Inter Digit Wait Timer) expires it will also be
considered as end of dialing.
How to program?
Step 1: To select A-law and mu-law for the gateway using command
SIMADO GBR42 V1 System Manual

System Parameters

Matrix
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