Table of Contents
Advertisement
What is SPID?
SPID stands for Service Profile ID.
SPIDs are a series of numbers that informs the central office switch which services and
features to provide to an ISDN device. The generic SPID format comprises 14 digits.
The first 10 digits are the main telephone number on the terminal. The last 4 digits are
dependent on the number of terminals on the interface and the services they support.
NT1 Connection
The ISDN U-loop is terminated by NT1 device at the customer premises.
connection between the NT1 and Terminal Adapter (ta) is called point " T" . The NT1
drives a 4-conductor S/T-bus which may be expanded to 8 conductors to provide for
emergency power. If your ISDN product with a S/T outlet interface, you need an NT1
device connect to the ISDN switch. ISDN T/A 128 ST adapter needs an NT1 device to
connect to the ISDN switch, but ISDN T/A 128 U adapter does not require NT1 device.
In the UK, and in many European countries, an NT1 device is supplied by your
telephone company. Therefore the ST adapter are required for these countries.
Internet Access Account
If you want to use ISDN T/A 128 adapter to connect to the Internet, you must get an
Internet access account from an ISP (Internet Service Provider) around your location.
You must also confirm with your ISP that they support ISDN access (either single
channel 64K or 128K MLP).
Environment Setup
All ISDN T/A 128 adapters are truly Plug and Play (PnP) compatible. Even if the BIOS
or computer main board does not provide PnP feature, the ISDN T/A 128 device driver
still can automatically configure ISDN card with proper I/O addresses and IRQ number.
1. Terminator setup of ISDN T/A 128 ST adapters (IA128-ST, IA128P-ST,
UI-1280ST)
F
Please jump to the next section (2.) if you are the user of U interface adapter,
IA128-U or IA128P-U.
ISDN S/T interface can support up to 8 ISDN terminals and through NT1 device
connecting to the ISDN network. One and only one ISDN S/T device should have
the terminator enabled. Normally the ISDN terminal which is farthest from NT1
should have the terminator enabled.
ISDN T/A 128 ST adapter provides two jumpers of JP1 and JP2 (or DIP switch in
The SPID is applicable to the US country only.
5
The
Advertisement
Table of Contents
