User guide

Configuring Terminal Adapters
48 MultiModemISI Hybrid Server Cards, ISIHP & ISIHI Series
The Directory Number (DN) is the phone number another user would
call to contact this TA once it is attached to the ISDN. AT commands:
AT!N1= and AT*!N1=
Note: SPIDs only apply for North American switch types.
International Users
The terminal adapters ship already configured for NET3, which should
work for most telephone lines in Europe. If you want to customize
settings, refer to the Optional Settings below.
Optional Settings
 Data TEI _____________________________
The Data TEI is the TEI (terminal endpoint identifier) assigned to the
data channel. You can select Auto TEI, a fixed TEI, or Disable. A
TEI is a number used by the central office switch to uniquely identify
each device that is 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 _____________________________
The Voice TEI is the TEI assigned to the voice channel. You have the
same choices as for Data TEI: Auto TEI, fixed TEI number, or
Disable.
AT command: *!D3=
 Persistent DTR Dialing __________________
A high DTR (Data Terminal Ready) signal on the serial port indicates
that your computer or terminal is ready to communicate with your
TA. DTR normally goes high when a communication program starts
or is ready to dial. Persistent DTR dialing enables the TA to
automatically redial the number stored in memory location 0
whenever DTR is high, and the serial port does not have an active
call. You can enable or disable this feature. AT command: $D