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CHAPTER 1 GENERAL INFORMATION
System Outline
NEAX2000 IVS
2
ISDN System Manual
ND-70919 (E), Issue 1.0
Page 11
BRT
The Basic Rate Interface Trunk (BRT) provides one or two physical interface to the ISDN-Basic
Rate Interface service (144 Kbps PCM-2B + D).
The BRT has the following functions:
• Unipolar/Bipolar Conversion (AMI Format) (S/T Interface) / B8ZS
• Signaling Insertion/Extraction
• Frame Synchronization
• Digital PAD on Voice Signal Transmission
For connections of BRT and transmission line, twisted-pair cables can be used.