1031 Data Over Voice (DOV) Service

Data Over Voice (DOV) service provides a point-to-point derived data channel 
over the same pair of wires used to provide local service.  DOV can be used to 
connect a client to an ESP or between two ESP locations.  

Generic Name of ONA Service
 	Product Name					BSE or CNS
===========================================================================
Data Over Voice (DOV) Service
	BA - Dedicated Derived Channel			BSA ***
	BS - Derived Data Channel 			CNS
	NX - DOVPATH(sm)				BSA ****
	PB - Digital Data Over Voice			CNS
	USW - Simultaneous Voice and Data Service	CNS

DOVPATH is a registered service mark of NYNEX.
*** Bell Atlantic will provide this with the Dedicated Derived Channel BSA.
**** NYNEX will provide this with the Dedicated Derived Channel BSA.

FEATURE OPERATION:
DOV is established via a service order placed with the telephone company.
Each line to be provisioned for DOV will be equipped with a Voice Data
Multiplexer (VDM) at the end user's location (CPE) and in the serving
central office.  The VDM at the serving central office directs voice
traffic to the circuit switched network and the data traffic to another
VDM, special access line, or to a data switch.  Back-to-back VDMs will 
allow the ESP to connect to a client or another ESP location.

TECHNOLOGICAL AND FEATURE INTERACTION CONSIDERATIONS:
1. This feature is independent of central office switch type.

2. The derived data channel may support speeds up to 19.2 Kbps.

3. Interoffice back-to-back VDM arrangements may be offered by some LECs.

4. The pair of wires between the end user's location and the central office
   must be non-loaded.

5. This service is not compatible with range extension or subscriber carrier
   equipment.

6. References:
   o See SR-NPL-000665 Network Interface Specification: DOV/DVM Type 1,
     Issue 1, January 1987.  
   o Also see Bell Atlantic technical references TR 72009 Bell Atlantic 
     Data/Voice Multiplexer Service Network Access Interface Specifications, 
     January 1986 and TR 72017 Bell Atlantic Data/Voice Multiplexer Service 
     Interface Specifications, March 1987.
   o Also see NYNEX Technical Reference NTR-74374 "Universal Data Voice 
     Multiplexer Access to Digital Data Over Voice (DOV) Network Interface 
     Specification, Issue 1, June 1988."  
   o Also see U S WEST Document 77330 "Data Over Voice Multiplexer Network 
     Access Interface Specifications for Phase Coherent FSK" Issue A, 
     February 1989.  
   o Also see U S WEST Document 77331 Digital Data Over Voice Digital Access 
     Arrangement Network Interface Specifications, Issue A, December 1989.
