ADTRAN D4-n x 56 DSU DP, D4-n x 64 DSU DP manual Featuresbenefits, Description, D4-n x 56/64 DSU DP

SECTION XXXXXXX-XX

D4-nx 56/64 DSU DP

n x 56/64 kB/s Data Service Unit Dataport

FEATURESBENEFITS

•Plugs into WECO® D4 or equivalent, SLC 96, and the ADTRAN ACT 1 and AD4-24 channel banks

•Operates at data rates of n x 56 or n x 64 where n = 1 to 24 or 56 kB/s to 1.536 MB/s

•Supports 64K Clear Channel operation

•Selectable stuff bit in non-Clear Channel (56 kB/s) mode

•Data may be assigned to consecutive or alternating time slots

•EIA 530 and V.35 interfaces supported

•Allows for bridging by disabling received data and timing outputs while allowing transmit data and timing inputs to be unterminated

•Test modes include Local Loopback, Remote Loopback (V.54 compatible), Remote Loopback with Test Pattern, Self Test

•Provides both internal and external transmit clock selections

•Compatible with a large installed base of channel banks

•Numerous bandwidth requirements supported by one card

•Allows more efficient utilization of network bandwidth

•Ensures network required 1s density; provides capability to avoid false yellow alarm occurrences

•Supports full and fractional T1 network services

•Compatible with existing DTE interfaces

•Provides for both point-to-point and multipoint modes

•Enables quick and accurate problem isolation

•Enhances network synchronization options

DESCRIPTION

The ADTRAN n x 56/64 DSU DP allows for connection of Data Terminal Equipment (DTE) devices at very high data rates. The n x 56/64 DSU DP accepts data from the customer over either an EIA-530 or V.35 interface. It then translates the composite bandwidth from the user into individual 56 or 64 kB/s channels for transport through either public or private network facilities. The number of time slots utilized, which determines the amount of bandwidth available to the user, is selected by setting the two rotary switches that program the value of n. An additional switch option allows for selecting 56 kB/s or 64 kB/s mode. The network must be capable of transporting 64 kB/s Clear Channel data before this option may be utilized.

The combination of these two parameters determines the operating bandwidth. This allows for data rates from 56K (n = 1 and 56K mode) to 1.536 MB/s (n = 24 and 64K mode). Data from the n x 56/64 DSU DP, in the form of individual time slots of information, is routed to the common equipment section of the channel bank. There, it is combined with information from other channel unit devices to form a composite T1 stream. The T1 signal is then available for transport over existing T1 or fractional T1 service offerings. The inverse of the procedure described above occurs at the remote channel bank location and the composite bandwidth is reconstructed and delivered to the remote user.

ADTRAN ACT1 (or D4) CHANNEL BANK
	nx56/64 nx56/64 nx56/64 nx56/64 nx56/64					nx56/64		NETWORK
	1	2	3	4	5	6	7	24
								T1
			6 TIME SLOTS
			@ 64K=384K
EIA 530	nx56/64 DSU DP
	N=6
384 kB/s DATA
	64K MODE
	n x 56/64 OPERATION (CONCEPTUAL)

®WECO is a registered trademark of AT&T Technologies, Inc.

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