Is-11572 (Layer 3 Specifications For Inter-Pbx Signaling Protocol) - NEC NEAX 2400 IPX Programming Manual

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IS-11572 (LAYER 3 SPECIFICATIONS FOR INTER-PBX SIGNALING PROTOCOL)

1. General Description
This feature allows inter-PBX link using Layer 3 signalling protocol supporting circuit mode bearer services
(ISO/IEC IS-11572). This feature has the following functions:
• Outgoing/Incoming Call Connection
• Tandem Connection
• Inter-PBX Link
This feature is available for the PBX with the PA-30PRTC circuit card.
1. Physical Interface
A maximum of 63 channels are to be controlled by a single Data Link channel. This feature, however, does
not support D-CHANNEL BACKUP.
IS-11572 (LAYER 3 SPECIFICATIONS FOR INTER-PBX SIGNALING PROTOCOL)
PBX
PRT
PBX
DTI
DTI
Legend:
IS-11572
( Private ISDN )
Logical interface
Logical interface
: D-channel
: B-channel
NDA-24305
PBX
PRT
42B+D
4B+D
CHAPTER 6
Page 277
Revision 1.0