1044 Automatic Recall

Automatic Recall (CLASS) is an incoming call management feature that allows 
the customer to automatically call back the last incoming number without having
to know the number that called.  If the called line is busy, the called line 
will be checked periodically and the customer will be notified by a special ring
when the called line becomes idle.  This capability requires that both the 
originating and terminating central offices be equipped with Common Channel 
Signaling (CCS) SS7 and be interconnected by SS7.

Generic Name of ONA Service	Product Name		BSE or CNS
===========================================================================
Automatic Recall	AM - Automatic Callback		CNS	
			BA - Return Call		CNS
                  	BS - Call Return		CNS
			NX - Call Return		CNS
                  	PB - Call Return		CNS or BSE
                  	SWB - Call Return (sm)		CNS
                  	USW - Last Call Return		CNS

Call Return is a service mark of Southwestern Bell Telephone Company.

FEATURE OPERATION:
The customer must contact the telephone company to initiate Automatic Recall
service.  A service order is required.  Once the appropriate translations have 
been made to the customer's line, the customer activates the service by dialing
the service access code *69 (1169 for rotary dial), then depending on how the 
Local Exchange Company chooses to implement Automatic Recall, one of the 
following happens:

o One-Level Activation Procedure
  Upon activation using *69 (1169 for rotary dial), the called line is
  checked for busy/idle status and class of service.  If the called line
  is idle and the class of service is permissible, call setup is attempted.
  If the called line is busy, the customer receives an announcement stating
  the called line is busy.  The line will be checked periodically for busy/idle 
  status and when the line becomes idle the customer will hear a special ring.
  Upon answering the special ring, one of the following happens:

  1. Call setup is attempted, the customer hears audible ringing while the
     called party receives power ringing.  Or

  2. The customer receives an announcement indicating the following:

     1A ESS & 5ESS:  The called line has become busy again, hang up and try 
     your call again.  (This terminates Automatic Recall for this activation.)
     The customer can reactivate Automatic Recall by again using the service
     access code. 

     DMS-100:  The called line has become busy again, monitoring of the line
     will resume, hang up and wait for the special ringback.

o Two-Level Activation Procedure:

  Upon activation using *69 (1169 for rotary dial), an announcement is
  provided informing the customer that Automatic Recall has been accessed.
  If the incoming number is valid, the number, date and time of the call is 
  voiced back to the customer.  (If the number is marked private then a private 
  indication is voiced back to the customer instead of the number.)  The
  customer is then instructed to dial "1" to activate Automatic Recall
  or hang up to abort the request.  If the customer dials "1", the service
  proceeds as described above under the One-Level Activation Procedure.

To cancel all outstanding Automatic Recall requests, the customer may 
deactivate the service by using *89 (1189 for rotary dial).

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*	5E5	BCS28

Note:  * Available on intraoffice basis with generic 1AE9.

2. The serving central office switch must be equipped with the appropriate
   CLASS Automatic Recall 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.  This service is only offered on an intraLATA basis at this time.

3. 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 that have denied originating and denied
   terminating treatment and multiline hunt groups that cannot have ringback
   directed to the calling station.  In addition, because of the special
   ringing, this service may not work where channel banks (FX service), MFTs 
   or bridge lifters are used (depending upon circuit design).

4. The special ringing that the customer hears when call setup is being
   attempted consists of 2 short rings and 1 long ring in 6 seconds.  Some
   telephone companies use this pattern for more than one service.

5. There are some digital loop carrier plug-ins that will not transmit the 
   required special ringing.

6. The customer can have multiple Automatic Recall activations in effect
   concurrently.

7. Automatic Recall cannot be activated towards a line that has Call
   Forwarding Variable or Selective Call Forwarding activated.  If the service
   cannot be activated, the caller is routed to a denial announcement or tone.

8. In some electronic key sets, power ringing generates a preset ringing
   pattern regardless of the ringing pattern generated by the originating
   central office.  Therefore customers with these electronic sets may not
   be able to differentiate regular ringing for incoming calls from
   special ringing for Automatic Recall.

9. The length of time the called line is monitored for busy/idle status is
   a telephone company settable parameter ranging from 16-45 minutes.
   The interval is set on a per switch basis, and is generally the same
   throughout a regional company.

10. The customer can use the telephone for incoming and outgoing calls
    while waiting for the special ringback.  However, the special
    ringback will not be attempted while the customer is using the telephone.

11. References:
 o LSSGR (TR-TSY-000064), FSD 01-02-1260 (place holder only).
 o TR-TSY-000227 CLASS Feature: Automatic Recall, Issue 1, September 1988.

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