Installation Hints – DDI Numbers
To allow an incoming call to be directed to selected destinations within the PBX, Digital
CO Lines have the ability to transmit part of the dialed number to the PBX.
The Network provider can supply two different services.
1.
MSN service.
Provided on a Multipoint ISDN2e CO Line.
Can translate up to 10 incoming number strings on each Port
Generally send the Local Number or the National Number minus the 0.
Provided on a single ISDN2e basis, no hunting to another ISDN2e Cct.
Programming:
Prog Step
Contents
[437] MSN Number set
Incoming number strings
[438] MSN Day Ringing assignment
Day Destination
[439] MSN Night Ringing assignment
Night Destination
2.
DDI service
Provided on a Point ISDN2 or ISDN 30 CO Line.
Can translate up to 400 incoming number strings
Generally send the last three digits of the dialed number.
Can be provided on several ISDN2 Ccts (Hunts when busy).
Programming:
Prog Step
Contents
[150] DDI Number Translation
Incoming number strings
[151] DDI Day Ringing assignment
Day Destination
[152] DDI Night Ringing assignment
Night Destination
Note:
If the PBX CO line is set to Point working, it will link with either a Point or Multipoint
service provided by the Network Provider.
When upgrading a Version 4 or earlier PBX with PC Programming, care should be taken
to check the DDI translation on the Version 5 data base.
On the Version 4 or earlier PBX there was no Day Night destination option and DDI
numbers were assigned to the Ports using several Program Steps
(i.e. 112; Hunt Groups, 136; Phantom Extn, 618; Extn, 619; ISDN Extn).
Содержание KX-TD1232E
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