1009 Hunt Groups - Packet

Hunt Groups is an optional subscription Public Packet Switched Network (PPSN) 
feature which allows a subscriber to associate a single address with a group of
asynchronous or X.25 direct interfaces.  Incoming calls routed to the group 
address are distributed based on the type of hunting requested by the 
subscriber.  The PPSN Hunt Group feature may vary in operation and capabilities
provided by specific packet switch vendors.

Generic Name of ONA Service 	Product Name			 BSE or CNS
===========================================================================
Hunt Groups - Packet		AM - Hunt Groups			BSE 
                    		BA - Multiple Channel Hunt Groups	BSE 
                    		BS - Hunt Group			 BSE or CNS
                    		NX - Hunting			 BSE or CNS
                    		PB - Hunt Group (INT/EXT)		BSE 
                    		SWB - Packet Hunt Group			BSE
                    		USW - Multiple Port Hunt Group		BSE

FEATURE OPERATION:
The PPSN Access Concentrator (AC) or ISDN Packet Handling Facility (PHF) will
provide as a subscription option a hunt group capability that distributes 
incoming calls to a single packet network address.  Three hunting arrangements 
that may be provided by packet vendors are:
- Sequential Hunt - all calls are delivered to the first access interface.  If
  busy, calls will be delivered to the second interface.  If that interface is
  busy, calls will be delivered to the third, and so on until the call is
  completed.  If all sequential access interfaces are busy, the call will be
  cleared.
- Uniform Hunt - hunting arrangement keeps track of the last incoming call and
  delivers the next call to the next interface on the hunt list.  The
  call is cleared when all interfaces are busy.
- Load Sharing Hunt - the user specifies the number of calls per interface
  before moving to the next address.  If the last interface is busy
  the process repeats from the first address on the list.

TECHNOLOGICAL AND FEATURE INTERACTION CONSIDERATIONS:
1. The PPSN Access Concentrator (AC) should support asynchronous and X.25 direct
   access interfaces.

2. The ISDN Packet Handling Facility (PHF) should support X.25 direct access
   interfaces.  

3. The AC should support at least ten X.25 direct access interfaces.

4. References:
   o PPSNGR TR-TSY-301, Issue 2, December 1988, Section 3.2.6.22.

This service, if offered as a BSE, may be associated with the Packet Switched 
X.25 and X.75 basic serving arrangements.
