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1.20 Integrated Services Digital Network (ISDN) Service Features
Feature Guide 183
2. ISDN Supplementary Service Table for Public Network
Service Description Details in
Direct Dialling In
(DDI)
Directs a call with a DDI number to a
preprogrammed destination. (P-P only)
• 1.1.1.3 Direct
Inward Dialling
(DID)/Direct
Dialling In
(DDI)
Multiple
Subscriber
Number (MSN)
One ISDN port can support a maximum of 10
MSNs for routing incoming calls. (P-MP only)
• 1.1.1.4
Multiple
Subscriber
Number
(MSN) Ringing
Service
Calling Line
Identification
Presentation
(CLIP)
Sends the caller’s telephone number to the
network when making a call. The called party
can see the number on his telephone display
before answering the call.
• 1.20.1.2
Calling/
Connected
Line
Identification
Presentation
(CLIP/COLP)
Connected Line
Identification
Presentation
(COLP)
Sends the telephone number of the answered
party to the network when answering a call. The
caller can see the number on his telephone
display when the line is connected.
Calling Line
Identification
Restriction (CLIR)
Prevents the caller’s CLI being presented to the
called party by the caller.
Connected Line
Identification
Restriction
(COLR)
Prevents COLP being sent by the answered
party.
Subaddressing
(SUB)
You may add digits after the telephone number.
These digits will be passed to ISDN terminal
device.
–
User-to-user
Signalling Type 1
(UUS-1)
Transmits a specified volume of the data through
the D channel between the ISDN terminal
devices of different PBXs using UUS types 1.
–
Advice of Charge
(AOC)
The PBX can receive the call charge information
on ISDN lines from the telephone company.
• 1.20.1.3
Advice of
Charge (AOC)
Call Forwarding
(CF)—by ISDN
Forwards an incoming call to another outside
party using the ISDN service of the telephone
company.
• 1.20.1.4 Call
Forwarding
(CF)—by
ISDN (P-MP)
• 1.20.1.5 Call
Forwarding
(CF)—by
ISDN (P-P)