1022 Category 3, Type H - Dedicated High Capacity Digital (>1.544 Mbps) BSA

Category 3 - Dedicated Basic Serving Arrangement

A dedicated BSA provides an ESP with a dedicated point-to-point connection 
through the network.  This category of serving arrangements are available 
full-time so that individual calls are not set up and taken down.  This BSA 
is capable of supporting analog or digital signals at various transmission 
rates.  The transmission interface may be 2-wire or 4-wire, or derived from a 
variety of multiplexing alternatives (e.g., DS-1 or DS-3).  It is also capable 
of providing supervisory signaling in some configurations. 

Route diversity may be available with this serving arrangement.

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Category 3, Type H - Dedicated High Capacity Digital (>1.544 Mbps) BSA

The dedicated high capacity digital (>1.544 Mbps) BSA provides an ESP with a 
dedicated channel to the ESP's client via a digital facility.  This BSA provides
for the transmission of data at rates above 1.544 Mbps (e.g., nominal 
44.736 Mbps [DS3] isochronous serial data).  The ESP must specify the desired
transmission speed as an alternative with this BSA.  This arrangement may extend
between customer terminal locations or between a customer's terminal location 
and a BOC designated HUB Office where multiplexing is offered.

Generic Name of BSA
 	Regional Company BSA Name
==========================================================================
Category 3, Type H - Dedicated High Capacity Digital (>1.544 Mbps) BSA
	AM - OPTINET DS3
	BA - High Capacity/Lightwave Service
	BS - LightGate(R)/HiCap
	NX - Dedicated - Digital - 45 Mbps
	PB - High Capacity Services (>1.544 Mbps)
	SWB - Special Access - High Capacity MegaLink(sm) Custom
	USW - DS3 Service

LightGate is a registered service mark of BellSouth Corporation.
MegaLink is a service mark of Southwestern Bell Telephone Company.

Reference:  Publication PUB 62508 High Capacity Digital Special Access Service
Transmission Parameter Limits and Interface Combinations, December 1983.  Also 
see U S WEST engineering publication 77327 Digicom III High Capacity Digital 
Access Service "Joint Designed: Network Channel Interface, December 1988.
