1.21 Integrated Services Digital Network (ISDN) Service Features
When the ISDN port is in P-MP configuration, a maximum of eight ISDN terminal devices can be
connected to the port. However, only a maximum of two devices can be used simultaneously.
Conditions
•
Overlap/En bloc
For each ISDN port, either Overlap or En bloc can be selected as the dialling method for which the PBX
sends telephone numbers to the telephone company. The selected dialling method must be offered by
the telephone company. When "Overlap" is selected, the PBX sends each dialled digit individually.
When "En bloc" is selected, the PBX sends all of the dialled digits at once.
→ 2.7.30 [1-1] Slot—BRI Port—ISDN CO—ISDN Outgoing Call Type
→ 2.7.32 [1-1] Slot—PRI Port—CO Setting—ISDN Outgoing Call Type
In En bloc mode, the PBX recognises that the user is finished dialling when:
–
the # key is pressed (programmable).
→ 2.8.18 [2-9] System Options—Option 2—ISDN en Bloc Dial—[#] as End of Dial for en Bloc mode
–
the dialled number is a preprogrammed telephone number.
→ 2.12.7 [6-7] Dialling Plan
–
the inter-digit timer expires.
→ 2.8.5 [2-3] Timers & Counters—Dial / IRNA / Recall / Tone—Dial—Extension Inter-digit
•
Some supplementary services are provided by the key protocol (→ 1.21.1.12 ISDN Service Access by
Keypad Protocol).
•
Extension Number
An extension number can be assigned to each ISDN port.
→ 2.10.1 [4-1-1] Wired Extension—Extension Settings—Main—Extension Number
•
Network Type (BRI only)
Each BRI port can be set to the requirements of each country/area.
→ 2.7.30 [1-1] Slot—BRI Port—Network—Network Type
→ [420] BRI Network Type
•
L1 Active Mode and L2 Data Link Mode (BRI only)
The active mode of Layer 1 (L1) and the data link mode of Layer 2 (L2) can be selected individually
(Permanent or Call by Call) on an ISDN port basis.
2.7.30 [1-1] Slot—BRI Port—Network
→ L1 Mode
→ L2 Mode
→ [425] BRI Layer 2 Active Mode
•
TEI Assignment Mode (BRI only)
The Terminal Endpoint Identifier (TEI) assignment mode can be selected on an ISDN port basis
→ 2.7.30 [1-1] Slot—BRI Port—Network—TEI Mode
→ [427] BRI TEI Mode
•
Bearer Mode
The bearer mode can be assigned on an extension basis.
→ 2.10.1 [4-1-1] Wired Extension—Extension Settings—Option 6—ISDN Bearer
→ 2.10.10 [4-2-1] Portable Station—Extension Settings—Option 6—ISDN Bearer
•
Automatic ISDN Configuration
ISDN (BRI) port configuration can be set automatically through system programming.
→ 2.4.2 Tool—BRI Automatic Configuration
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
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Feature Guide