Nortel Networks DCT1900 - Manual (Page 81)

Technical Product Manual - DCT1900
Product Specifications, System Boards
Specs-DCT1900/R8/mw 6-1
© 2000-2005
C HAPTER 6
System Boards
6.1 Digital Trunk Unit (DTU–E1 CAS, CCS) - REX-BRD0002 or 2/ROFNB 157 13/1
Compliance to Regulations and Standards
The DTU–E1 provides 2 standard CEPT primary rate interfaces and meets the following
requirements:
CE regulation : 91/263/EEC
CE marking : (this marking is not placed on the DTU–E1 board
because the DCT1900 system is already covered by the CE
marking of the cabinet)
Leased line CTR : CTR12
G.703 : Electrical characteristics of the 2.048 Mbit/s synchronization
interface
G.704 : Synchronization frame structure at 2.048 Mbit/s
G.823 : Input jitter requirements
G.732 : Characteristics of primary rate PCM multiplex equipment
operating at 2.048 Mbit/s
I.431 : Primary rate layer 1
Environmental
Temperature
Operating : 32 to 104
°F (0 to 70°C)
Storage : -40 to 158
°F (-40 to 70°C)
Relative humidity : 20 to 80%, non condensing
General Specifications
Length x width
13.5" x 7.7" (343 x 195.6mm)
Digital Trunk Specification
Number of primary rate
interfaces per DTU board
: 2
Bit rate : 2.048 Mbit/s
Signalling : Common Channel Signalling (CCS), using firmware set
NTM/RYSNB 101 17/3
: Channel Associated Signalling (CAS), using firmware set
RYS 105 664