1085 Selective Call Rejection

Selective Call Rejection (CLASS) provides the subscriber with the ability to 
block incoming calls from a pre-specified list of directory numbers.  The 
subscriber to this feature builds a list of telephone numbers that they want 
automatically blocked.  The pre-selected (blocked) directory numbers are routed
to a standard central office announcement instead of the dialed number.  
Subscribers can also place the number of the last incoming call on their list, 
without having to know the telephone number, by dialing a special command code.
However, this must be done PRIOR to receiving another call.

Generic Name of ONA Service 	Product Name		BSE or CNS
===========================================================================
Selective Call Rejection	AM - Call Screening	CNS
	                    	BA - Call Block		CNS
       		             	BS - Call Block		CNS
               		     	PB - Call Block		CNS or BSE
               		     	SWB - Call Blocker(sm)	CNS
               		     	USW - Call Rejection	CNS

Call Blocker is a service mark of Southwestern Bell Telephone.

FEATURE OPERATION:
The customer must contact the local telephone company to initiate Selective
Call Rejection service.  A service order is required.  The customer initiates 
control of the Selective Call Rejection screening list contents as well as 
activation and deactivation of the service by dialing access codes as described
below.  Once the appropriate translations have been made to the customer's line
the customer may activate, deactivate and/or use the service as follows. 

1. 1A ESS: To activate the Selective Call Rejection service, the customer must 
   go off-hook and dial *60 (1160 for rotary dial).  The customer will then 
   receive an announcement providing the following information:
   - The name of the service.
   - The service is now active.
   - The number of entries on the list.
   - The instructions for adding the last incoming number to the list, adding
     known numbers to the list, removing subscriber entries from the list, 
     reviewing the list.

   To deactivate the service, the customer must go off-hook and dial *80 (1180
   for rotary dial).  The customer will then receive an announcement
   providing the following information:
   - The name of the service.
   - The service is now off.
   - The number of entries on the list.
   - The instructions for removing any subscriber list entry, removing all
     subscriber entered numbers.

2. 5ESS and DMS-100:  To activate or deactivate the Selective Call Rejection
   service, the customer must go off-hook and dial either *60 or *80 (1160 or
   1180 for rotary dial).  Once either access code has been successfully
   entered, the customer should receive an announcement providing the following
   information:
   - The name of the service.
   - The status of the service (active or inactive).
   - The number of entries on the list.
   - The instructions for adding the last incoming number to the list, adding
     removing, reviewing the list, changing of service status (active to 
     inactive, inactive to active).

TECHNOLOGICAL AND FEATURE INTERACTION CONSIDERATIONS:
1. This feature is available in the following central office switches:

Switch Type			1A ESS	5ESS	DMS-100	
Earliest Generic Release	1AE10*	5E6	BCS31**	

   NOTE: * Available on an intraoffice basis with 1AE9.
   ** References to switching system generics that have not yet been released by
   the vendors are based on our current information about which features are 
   planned for inclusion in those generic releases.  If the vendors change the 
   availability of any features for future generic releases that are referenced
   in this document, the availability of some services may be affected.

2. The maximum directory number list size is pre-determined by the telephone 
   company on a company basis and can range from 2 to 31.

3. The serving central office switch must be equipped with the appropriate CLASS
   Selective Call Rejection software and hardware.  In order for this service to
   work on an interoffice basis, both the originating and terminating switches 
   must be equipped with the CLASS and Common Channel Signaling (CCS) SS7 
   software and hardware and the interoffice trunks must be converted to SS7.

4. This service is a "line" service and therefore cannot be assigned to 
   subscribers with trunk terminations (i.e., PBX with DID).  This service is 
   also unavailable to customers with the following types of lines: multiparty,
   hotel/motel, coin and coinless public, 1A ESS remote switching system lines 
   (RSS), and Centrex attendant with console.  

5. The announcement the rejected call is routed to is a telephone company
   recorded announcement (not customer changeable).

6. References: 
   o LSSGR (TR-TSY-000064), FSD 01-02-0760, Issue 2, July 1987, 
     Module TR-TSY-000521.
   o TR-TSY-000218 CLASS Feature: Selective Call Rejection, FSD 01-02-0760, 
     Issue 2, November 1988.  
   o Also see TR-TSY-000220, CLASS Feature: Screen List Editing, Issue 2,
     April 1989.

This service, if offered as a BSE, is associated with the Circuit Switched 
Line basic serving arrangement.
