– Dialling #, if programmed
– Dialling a preprogrammed telephone number
– Inter-digit timer expires.
•
Some supplementary services are provided by the key protocol (
Service Access by Keypad Protocol).
•
Extension Number
An extension number can be assigned to each ISDN port.
•
Network Type
Each ISDN port can be set to the requirements of each country/area (
Type [420] *For BRI only).
•
L1 Active Mode and L2 Data Link Mode
The active mode of Layer 1 (L1) (
data link mode of Layer 2 (L2) (
selected individually, Permanent or Call by Call, on an ISDN port basis.
•
TEI Assignment Mode
The Terminal Endpoint Identifier (TEI) assignment mode can be selected on an ISDN port
basis (
•
Bearer Mode
The bearer mode can be assigned on an extension basis.
•
Automatic ISDN Configuration
ISDN (BRI) port configuration can be set automatically through system programming.
The following items will be set by making and receiving a call using the subscriber number
assigned for each ISDN (BRI) port:
– L1 Active Mode
– L2 Data Link Mode
– Access Mode (Point-to-Point/Point-to-Multipoint)
– TEI Assignment Mode (Fix 00–63/Automatic)
Feature Guide References
1.28.3 QSIG Network
1.20 Integrated Services Digital Network (ISDN) Service Features
BRI TEI Mode [427] *For BRI only).
BRI Layer 1 Active Mode [424] *For BRI only) and the
BRI Layer 2 Active Mode [425] *For BRI only) can be
1.20.1.12 ISDN
BRI Network
Feature Guide
185