ATIA-7a

 

 

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ALIANT TELECOM INDUSTRY ADVISORY

 

Notice of Minor Network Change

May 23, 1997

No. ATIA-7a (Formerly SIA-7d)

Subject:

Message Waiting Indicator Tone

Aliant Telecom Inc., on behalf of NBTel Inc., Island Telecom Inc., Maritime Telegraph and Telephone Company, and NewTel Communications Inc., announces a change of the Audible Message Waiting Indication (AMWI), as currently used on the Companies' DMS-100 switches. The change is scheduled to begin by 1Q98.

The AMWI had been previously disclosed in TAPAC Bulletin No. 91-04, dated May 1, 1991. In future, the standard Message Waiting Indicator Tone as defined by Bellcore will be used throughout the network.

Compatibility Impact:

Some terminals that are designed to recognize a message waiting indicator tone may be impacted. The standard message waiting indicator tone reverts to normal steady dial tone after two seconds.

Documentation:

The standard Message Waiting Indicator Tone is described in Bellcore Technical Reference TR-NWT-000506, LSSGR LATA Switching Systems Generic Requirements, Signaling, Issue 3, September 1991, Revision 1, November 1991.  This document may be ordered from
Telcordia Technologies. They can be reached at 1-800-521-2673.

If you have any questions on the above, please contact:

Telephony Standards
160 Elgin St., Room 640
Ottawa, Ontario, K1G 3J4 Canada
Tel: (in Canada) 1-877-77-TELCO (83526)
Tel: (Worldwide) (613) 781-7393
Fax: (613) 781-1658
Email: disclosure@aliant.cdn-telco.com

 

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