3023 Hunting Service Arrangements:Circular (Bell Atlantic Region Specific)

Multiline Hunt Group

Multiline Hunting provides a software-defined search for an idle terminal to 
which a call can be completed.  When calls are placed to a Multiline Hunt Group,
hunting begins with a member designated by the dialed directory number and hunts
sequentially through the group until an idle member is found or the end of the 
designated list is encountered.  If no idle member is found, busy tone is 
returned to the calling party.  Several types of hunting arrangements are 
available:  Regular Hunting, Circular Hunting, and Preferential Hunting.

Preferential hunting provides individual terminals in a hunt group a 
"preferential list" that consists of any terminals in the hunt group to be 
hunted in any sequence.  If the telephone number of the called line is found 
busy, the preferential list is sequentially hunted for an idle line.  If all the
terminals in the preferential list are found busy, the last number of the 
preferential list is the start hunt telephone number for the regular or circular
hunt group.  The effect is to make a hunt group member the "pilot" of it's own 
hunt group.

Generic Name of ONA Service
 	Product Name					BSE or CNS
===========================================================================
Multiline Hunt Group
	AM - Circular Multiline Hunt Group		BSE 
	AM - Multiline Hunt Group Overflow		BSE 
	AM - Preferential Hunting			BSE
	AM - Regular Multiline Hunt Group		BSE
	BA - Hunting Service Arrangements		BSE
	BA - Hunting Service Arrangements:Circular	BSE 
	BA - Hunting Service Arrangements:Preferred	BSE
	BS - Multiline Hunt Groups			BSE or CNS
	NX - Hunt Groups				BSE or CNS
	PB - Hunt Group Arrangement			BSE
	SWB - Multiline Hunt Group			BSE 
	USW - Hunting					BSE

FEATURE OPERATION:
The Regular Line Hunting capability offers a hunting arrangement in which 
hunting begins with the terminal number associated with the called number
and continues sequentially through the last terminal number in the Multiline
Hunt Group where the hunting is stopped.

The Circular Line Hunting capability offers a hunting arrangement in which
hunting begins with the terminal number associated with the called number and
continues sequentially through the last terminal number in the Multiline Hunt
Group where hunting resumes at terminal 1 and continues through the terminal
preceding the start hunt terminal.

The preferential hunting arrangement allows a prehunt over a subset or
preferential list of terminals before hunting through the hunt group.  The hunt
group can be either a circular or regular hunt group.  All terminals in the 
group can have their own preferential list.  When a call is to terminate to a 
group with preferential hunting, the address of the preferential list is 
obtained and conditional hunting is performed.  The first terminal in the list 
is examined, and if idle, an attempt is made to terminate the call.  If busy, 
the next terminal in the preferential list is examined and so on until an idle 
terminal is found.  If an idle line is not found, then the last terminal in the
list is used as the start hunt number into the regular or circular hunt group.
A regular or circular hunting is performed, and if no idle terminal is found via
a search through the entire group, the calling party receives busy tone.

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)	BCS17	

Note: * Regular and Circular Hunting only are available in the 5ESS switch.

2. These Hunting features are compatible with the majority of Distinctive 
   Ringing and Three-Way Calling features in the 1A ESS, 5ESS and the DMS-100 
   switches.  The Call Forwarding features are compatible with the hunting 
   techniques in the 1A ESS and 5ESS switches.

3. The Call Waiting feature is compatible with preferential hunting in
   both the 1A ESS and the DMS-100.

4. In the 1A ESS, the preferential list can have a maximum of 18 terminals 
   assigned to be hunted before returning to the hunt group.  In the DMS-100, 
   the preferential list can have a maximum of 19 terminals assigned, including
   the pilot number, to be hunted before returning to the hunt group.

5. In the DMS-100, preferential hunting is compatible with the Distributed
   Hunt Number feature.

6. References:  
   o LSSGR (TR-TSY-000064), FSD 01-02-0802, Multiline Hunt Service,
     Issue 2, July 1987, Module TR-TSY-000521.

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