Nortel Networks DCT1900 manual General Specifications

Technical Product Manual - DCT1900

Product Specifications, System Boards

6.2Digital 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
Environmental		Voice–band Applications.
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

6.3Digital 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.

6-2	Specs-DCT1900/R8/mw
	© 2000-2005