
Setting Up ISDN Service |
Terms used in this user’s guide
The following
Basic Rate Interface (BRI): BRI is the type of ISDN service you will order from the ISDN service provider. A BRI ISDN line has two
B channels and a D channel. The B channels carry data at 56 Kbps or 64 Kbps, and can be used by the applications you use to access the Internet. The D channel is reserved for call setup and signalling.
B channels
ISDN BRI
D channel
Switch: The massive computer that controls your telephone line from the telephone company’s local central office. You must know the type of
Directory number (DN): The actual phone number associated with the ISDN line you order (the directory number is also referred to as the “telephone number” in this user’s guide). Depending on the type of switch on your line, there may be one directory number for both B channels, or one for each B channel.
SPID: The Service Profile ID generally looks like the directory number with some extra digits (the TID) appended to it. The number of SPIDs received with BRI service can vary from none to two.
TID (Terminal ID): This one- or
If you encounter other unfamiliar terms, check the glossary.