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Terminal-to-Network Interface Disclosure - Category (b)

April 26, 2000

No. ATIA-4j


Centrex IP


Aliant Telecom Inc., on behalf of NBTel Inc., Island Telecom Inc., Maritime Telegraph and Telephone Company, and NewTel Communications Inc announces the introduction of a trial for Centrex IP service. This service will enable IP terminals on a customer’s LAN to access the PSTN. This trial will commence in IIQ2000. Subject to technical considerations and market demand, commercial service is expected to be available IQ2001.

Compatibility Impact:

None expected.


The interface between the customer’s LAN and Aliant’s network is described in 2 documents:

Nortel Networks document NIS S227-1 Issue 01.01, "Internet Telephony Services Network Interface Specification" dated March 1999, describes internet telephony services and features provided by Aliant Telecom's network.

Nortel Networks document NIS S228-1 Issue 01.01, "Centrex IP Terminal (NTEX00) Network Interface Specification" dated September 1999, describes the operation of terminal equipment to be connected to the Centrex IP Terminal Proxy Server on DMS switches.

These documents are available through a license agreement from Aliant or from Nortel Networks. Information can be obtained from Nortel Networks by contacting Mr. Joe Hiscott, Director Technology Sales, Nortel Networks at (613) 768-2033. The license fee is $500 for each document. The agreement can be examined by interested parties by contacting Aliant Telecom Inc. at the address below.

For further information on the service or to request a license, 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

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