Multi-Tech Systems MTA128ST-USB - Manual (Page 33)

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Chapter 4 - AT Commands, S-Registers and Result Codes
MTA128ST-USB
Command: !N1=n
Function:
Data DN/MSN 1
Values: n = 25 character string
Default: null string
Description: !N1 sets the Directory Number (DN)/Multiple Subscriber Number (MSN) for
the data channel. The DN/MSN is a telephone number assigned to the TA at
subscription time by the ISDN service provider. The DN/MSN is a string of up
to 25 characters; valid characters are 0–9, the * character, and the #
character.
Command: !N2=n
Function:
Data DN/MSN 2
Values: n=25-character string
Default: Null string
Description: Data DN/MSN 2 accommodates the functionality for handling acceptance of
incoming data. Data DN/MSN 2 can be set to the same value as the Voice
DN/MSN or Data DN/MSN 1. See the !N1= command description.
Note: If using the TA as a host for MultiLink PPP calls with the MP+ Dynamic
Bandwidth Allocation scheme (S59=1), Data DN/MSN 2 must be entered.
Command: *!N1=n
Function:
Voice DN/MSN
Values: n = 25 character string
Default: null string
Description: Sets the DN/MSN for the voice channel. See the !N1= command description.
Command: !RXGn
Function:
Receive Gain
Values: n = 0–10
Default: !RXG6 (medium volume)
Description: Use !RXG to control the speaker level of an analog telephone device
connected to the AUX port. AT!RXG0 selects the lowest level, AT!RXG10
selects the highest level, and intermediate numbers select intermediate
levels.
!RXG0
Lowest speaker volume
through
!RXG10 Highest speaker volume
Command: !TXGn
Function:
Transmit Gain
Values: n = 0–4
Default: !TXG0 (No amplification)
Description: Use !TXG to amplify the microphone output of an analog telephone device
connected to the AUX port. AT!TXG0 selects no amplification, AT!TXG4
selects the highest amplification, and intermediate numbers select
intermediate amplification.
CAUTION: Do not adjust the gain unless absolutely necessary. It is very
large at nonzero levels. Adjust only for special equipment that provides very
low-level signals to the analog port.
!TXG0
No microphone amplification
through
!TXG4 Highest microphone amplification