Owner`s manual

Software/Driver Installation
MultiModemISI Hybrid Series, ISIHI-2S/2U 37
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