Technical information

Technician’s Handbook
22
DSU Cards
Table 3: DSU Cards
Card Devices Supported # of Channels/Links
BRI Card ISDN Basic Rate Interface card 6 or 15 BRI Circuits
CEPT Formatter Card
(all variants)
CEPT digital trunk 60 channels
(two 30-channel links and
2 D-channels)
Conference Card Flexible assignment for up to 64
conference channels; up to eight
conferees per conference call; up to 21
three-party conferences.
64 conference channels
DS1 Formatter Card
(all variants)
T1/D4 digital trunk 2 x 24-channel links
PRI E1 Card ISDN Primary Rate Interface card 2 x 30 B-channel and 2
D-channel links
PRI T1 Card ISDN Primary Rate Interface card 2 x 23 B-channel and 1
D-channel link
R2 Card Protocol Converter - converts incoming
MF-R2 signals from the PSTN to
DPNSS, and outgoing DPNSS to
MF-R2 signals for the PSTN.
two E1 links
(2 x 30-channel links )
Tone Detector Card Tone level detection
Auto-correlation tone detection
Threshold crossing count tone
detection
Cadence tone detection
32 tone detection channels