Nortel Networks DCT1900 - Manual (Page 82)

Technical Product Manual - DCT1900
Product Specifications, System Boards
6-2 Specs-DCT1900/R8/mw
© 2000-2005
6.2 Digital Trunk Unit, DTU-T1, CAS - REX-BRD0021 or 2/ROFNB 157 13/2
Compliance to Regulations and Standards
The DTU–T1 provides 2 standard T1 interfaces. The DTU–T1 complies with the following EIA/TIA
recommendation:
EIA/TIA 464 : Private Branch Exchange (PBX) Switching Equipment for
Voice–band Applications.
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 T1
interfaces per DTU
: 2
Bit rate : 1.544 Mbit/s
Signalling : Channel Associated Signalling with bit Robbing (CAS BR)
according to EIA/TIA 464–A FXS DSX–1, using firmware set
RYS 105 660
6.3 Digital Trunk Unit -DTU–T1,CCS - REX-BRD0021 or 2/ROFNB 157 13/3
The DTU–T1 provides 2 standard T1 interfaces. The DTU–T1 complies with the following EIA/TIA
recommendation:
EIA/TIA 464 : Private Branch Exchange (PBX) Switching Equipment for
Voice–band Applications.
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 T1
interfaces per DTU
: 2
Bit rate : 1.544 Mbit/s
Signalling : Common Channel Signalling with a 64Kbps D channel using
Q.931 protocol with proprietary extensions for mobility
management, using firmware RYS 105 650.