1011 Message Waiting Indicator - Packet Access

This capability allows an ESP to indicate to its subscriber that a message is
waiting for retrieval.  With this capability, the ESP can activate/deactivate
an audible signal, e.g., stutter dial tone, on the ESP's client's line.  This
capability provides the ESP access to the MWI function in many end offices via 
dialup or dedicated access to the LEC packet switched network.  The packet 
switched network will deliver the message waiting indicator 
activation/deactivation request to the ESP's client's end office.

Generic Name of ONA Service 			Product Name	BSE or CNS
===========================================================================
Message Waiting Indicator - Packet Access	SWB - Customer Alerting	BSE

FEATURE OPERATION:
This capability allows packet switched access to the central office Simplified 
Message Desk Interface (SMDI) feature for providing ESP client delivery of the 
Message Waiting Indication (MWI) activation and deactivation messages for 
stutter dial tone.  Access is made to the SMDI port through the public packet 
switched network.

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

Switch Type			1A ESS	5ESS	DMS-100
Earliest Generic Release	1AE8A	5E4.2	BCS30

2. This capability could be used in conjunction with services Call Forwarding
   - Busy Line & Call Forwarding - Don't Answer and Direct Inward Dialing.
     Due to the limitation of central office switches which can be equipped with
     SMDI, this capability will be offered only in selected 1A ESS, 5ESS, and
     DMS-100 equipped serving offices.

3. References:  See Southwestern Bell Telephone Company document TP 76830,
   Customer Alerting Using MicroLink II(sm) Service, Issue 1, June 1990.

MicroLink II is a service mark of Southwestern Bell Telephone Company.

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