1015 Category 3, Type A - Dedicated Metallic 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 A - Dedicated Metallic BSA

The Dedicated Metallic BSA provides a non-switched channel between the ESP
and the ESP's client for the transmission of low speed varying signals at rates
up to 30 baud.  This service can only be provided where metallic facilities are
available.

Generic Name of BSA
 	Regional Company BSA Name
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Category 3, Type A - Dedicated Metallic BSA
	BA - Dedicated Metallic
       	NX - Dedicated - Metallic
       	PB - Metallic Service
       	SWB - Special Access - Metallic
       	USW - Analog PLS - DCCS

Reference:  TR-NPL-000336 Metallic and Telegraph Grade Special Access Service
Transmission Parameter Limits and Interface Combinations, Issue 1, October 1987.
