18
Exchange interfaces and tasks, V1
nPurpose
of exchange is to organizes connection between exchange terminators!
nV1:
Access to basic ISDN (This is user’s ISDN-u interface that can be used
to connect small PBX also)
nBasic
ISDN V1-functions:
n2 B + D
(2x64 kbps + 16 kbps) channeling structure
ntiming and
frame synchronization
nactivate
and deactivate terminator
noperation
and maintenance
nfeeding
power supply
nISDN basic
access parameters defined in