ND-45383 (E) CHAPTER 2
Page 9
Revision CD 1.0
3.1.4 Specifications of the DRU
Table 2-1 and 2-2 show specifications pertaining to the DRU.
Table 2-1 Specifications of the DRU
ITEM
SPECIFICATIONS
DRU-30-A DRU-30-S3 DRU-23-S3
Number of Circuits 30 circuits ELC Mode DLC Mode ELC Mode DLC Mode
Voice 30 circuits
Data None
Voice15 circuits
Data15 circuits
Voice23 circuits
Data None
Voice 12 circuits
Data 11 circuits
Connectable
Terminal
Analog PB TEL
(One TEL per
analog port max)
2W D
term
(D
term
Series III) 2W D
term
(D
term
Series III)
Distance between
the DRU and Analog
PB TEL/D
term
350 Ω
(Including TEL
resistance)
Max. 200 meters (609 feet) Max. 200 meters (609 feet)
Table 2-2 Specifications of Interface between NEAX2400 IMS and the DRU
ITEM
INTERFACE SPECIFICATIONS
DRU-30-A/DRU-30-S3 DRU-23-S3
DRU Installing Con-
dition
In-Premises Direct Installation In-Premises Direct Installation/Remote Instal-
lation by T1 Interface
Extensible Distance Max. 400 meters (1218 feet)
[In the case of In-Premises Direct Installation]
Max. 400 meters (1218 feet)
[In the case of In-Premises Direct Installation]
Transmission Speed 2.048 Mbps 1.544 Mbps
Number of voice/
Data Channels
30 CH 23 CH
Number of Common
Channels
1 CH 1 CH
Transmission Code AMI (HDB3) AMI (B8ZS)