User guide

MTA128NT/ST Quick Start Guide
4
Network Configuration
The following describes network configuration. Other types of
configuration are included in the User Guide.
Network Switch Type
Select the network switch type your ISDN service provider uses at
its local central office. You can set the MTA128ST/NT to NET3
(DSS1), VN4, INS64, U.S. NI-1, AT&T 5ESS, or DMS-100. If you
don’t know the switch type, get the information from your ISDN
service provider.
AT command: !C0=
Data TEI
Data TEI is the TEI assigned to the data channel. You can select
Auto TEI, a fixed TEI, or Disable. A TEI (terminal endpoint
identifier) is a number used by the central office switch to
uniquely identify each device connected to the network. When it
uses dynamic TEI assignments (Auto TEI), the central office
switch assigns a TEI each time the TA connects to the network.
However, the ISDN service provider may assign a fixed TEI at
subscription time, in which case you must configure the TA with
the fixed TEI number. You also can disable the channel, which
may be useful when multiple TAs are attached to a network
terminator bus.
AT command: !D3=
Voice TEI
Voice TEI is the TEI assigned to the voice channel. Choices are:
Auto TEI, a fixed TEI number, or Disable.
AT command: *!D3=.