ADTRAN D4-n x 56 DSU DP, D4-n x 64 DSU DP User Manual

SECTION XXXXXXX-XX

D4-n x 56/64 DSU DP

x 56/64 DATA SERVICE UNIT DATAPORT

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SECTION XXXXXXX-XX

D4-n x 56/64 DSU DP

Data Service Unit Dataport

FEATURES BENEFITS

• Plugs into WECO® D4 or equivalent, SLC 96, and • Compatible with a large installed base of channel the ADTRAN ACT 1 and AD4-24 channel banks banks

• Operates at data rates of n x 56 or n x 64 where • Numerous bandwidth requirements supported by

= 1 to 24 or 56 kB/s to 1.536 MB/s one card

• Supports 64K Clear Channel operation • Allows more efficient utilization of network bandwidth

• Selectable stuff bit in non-Clear Channel (56 kB/s) • Ensures network required 1s density; provides mode capability to avoid false yellow alarm occurrences

• Data may be assigned to consecutive or alternating • Supports full and fractional T1 network services time slots

• EIA 530 and V.35 interfaces supported • Compatible with existing DTE interfaces

• Allows for bridging by disabling received data and • Provides for both point-to-point and multipoint modes timing outputs while allowing transmit data and timing inputs to be unterminated

• Test modes include Local Loopback, Remote • Enables quick and accurate problem isolation Loopback (V.54 compatible), Remote Loopback with Test Pattern, Self Test

x 56/64 kB/s

• Provides both internal and external transmit clock • Enhances network synchronization options selections

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.

ADTRAN ACT1 (or D4) CHANNEL BANK

56/64

176543224

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.

56/64

NETWORK

EIA 530

384 kB/s DATA

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

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x56/64 DSU DP

N=6

64K MODE

x 56/64 OPERATION (CONCEPTUAL)

6 TIME SLOTS

@ 64K=384K

+ 2 hidden pages