1050 Call Forwarding - Don't Answer Intraswitch

Call Forwarding Don't Answer (CFDA) is a central office software capability that
allows a client to have an incoming call redirected to another Directory Number
(DN) if the number dialed (the client's number) is not answered after a 
user-specified number of rings (or time interval).  The service is activated by
a service order.  The called number and the redirected number (forwarded-to 
number) are coded in the central office memory and can only be changed through a
service order.  The customer may specify the number of rings (or time interval)
at the time of the service order.  The customer has the option of answering the
call prior to its being forwarded, as long as the call is answered within the 
ringing cycle (time interval) selected.  The called number and the redirected 
number (forwarded-to number) must be in the same central office switch.  The 
service is deactivated, the forwarded-to number changed, or the number of rings
(time interval) is changed only by a service order.

Generic Name of ONA Service
 	Product Name					BSE or CNS
===========================================================================
Call Forwarding - Don't Answer Intraswitch
	AM - Alternate Answering			CNS 
	BA - Fixed Call Forwarding			CNS
       	BA - Call Forwarding Busy Line/Don't Answer	CNS
       	BS - Call Forwarding Don't Answer 		CNS
       	NX - Call Forwarding 2				CNS or BSE 
       	PB - Call Forwarding Don't Answer		CNS
       	SWB - Call Forwarding Don't Answer		CNS 
       	USW - Call Forwarding Don't Answer		CNS
       	USW - Call Forwarding Busy Line/Don't Answer	CNS

FEATURE OPERATION:
This feature is activated/deactivated by a service order.  The "forward-to"
number and the number of rings (time interval) is also selected and
preprogrammed at the time of the service order.  (Refer to the capabilities 
called "Call Forwarding - Busy Line or Don't Answer - Customer Control
of Activation/Deactivation" and  "Call Forwarding - Busy Line or Don't 
Answer - Customer Control of Forward-To Number" for the services with customer 
control.)

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	1AE8A	5E2(2)	BCS24

2. Multiline customers can have CFDA on each line if desired.

3. Calls may be forwarded to any telephone number served by the same central
   office that serves the base station except DID numbers in the 1A ESS.
   Forwarding to DID numbers in the 1A ESS will be available in generic
   1AE10.09*.  
   (* 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.)

4. Subscribers may have CFDA with Call Forwarding Busy Line (CFBL), Call
   Forwarding Variable (CFV), and Call Waiting (CW).  If a station has CFV
   and CFBL or CFDA active, then CFV will override the CFBL and/or CFDA 
   features.  If a station has CW and CFDA, CFDA will take precedence over 
   the CW feature if the station is idle. However, if the station is busy, 
   CW will take precedence and does not allow the CFDA feature to take effect 
   if the waiting call is unanswered.

5. References:
o General reference for Call Forwarding Don't Answer (intraswitch): LSSGR
  (TR-TSY-000064), Section 4.2.  Definition only, Feature Number 01-02-1407
  Call Forwarding Don't Answer - All Calls, Issue 2, July 1987, 
  Module TR-TSY-000500.
o Also see TR-TSY-000522, FSD 01-02-1450 Call Forwarding Subfeatures,
  Revision 1, August 1988.  

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