ADTRAN 1102008L1 D4 DSU DATA PORT MODULE

The ADTRAN D4-DSU DP is an all rate Data Service Unit Dataport that combines the functions of an office channel unit dataport (OCU DP) and a data service unit/channel service unit (DSU/CSU) in a single plug-in device. The DSU DP allows a data terminal equipment (DTE) device to directly access a 1.544 Mbps T1 carrier through a single 64 kbps channel position of a D4 channel bank. The DSU DP can be configured for dedicated DDS installations or for use with Switched 56 services provided by local and inter-exchange providers. DTE interface to the DSU DP can be made through the faceplate DB-25 connector or by attaching a channel adapter cable to the backplane of a D4 or equivalent channel bank. The DTE interface conforms to either EIA-232C or CCITT V.35, selectable by a jumper on the unit. Another jumper disables the backplane interface when the faceplate connector is being used. The DSU DP Primary Channel can be selected for synchronous data rates from 2.4 to 64kbps and asynchronous data rates from 2.4 to 19.2 kbps. The DSU DP also has a Secondary Channel that operates simultaneously at asynchronous data rates from 75 to 2400 bps. The secondary channel interface is used as a dialing port when Switched 56 operation is selected.