ARCHIVED - Telecom - Commission letter addressed to Mr. Pierre Allard (CoopTel)

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Ottawa, 19 December 2019

Our reference: 8740-C41-201910456


Mr. Pierre Allard
Director – Project Management and Regulation
5521, chemin de l’Aéroport
Valcourot, QUE J0E 2L0

RE: Tariff Notice 86,86A – Call Filtering service

Dear Mr. Allard:

On 10 October 2019, the Commission received an application from CoopTel, under Tariff Notice (TN) 86, as amended by TN 86A dated 18 November 2019, requesting approval to revise its General Tariff CRTC 25160 - Item 2.11, Services Divers de Circonscription, in order to introduce Call Filtering service.

Paragraph 28(1) (a) of the Canadian Radio-television and Telecommunications Commission Rules of Practice and Procedure provides that the Commission may require parties to file information or documents where needed.

CoopTel is requested to provide comprehensive answers, including rationale and any supporting information, to the attached questions by 17 January 2020.9.


Original signed by

Michel Murray
Director, Dispute Resolution & Regulatory Implementation
Telecommunications Sector

c.c: Joanne Baldassi, CRTC, 819-997-3498,

Requests for Information

  1. In its cover letter accompanying TN 86, filed 10 October 2019, CoopTel indicated that due to technical limitations, it has chosen to launch the optional call filtering service instead of providing universal network-level call blocking, as directed by the Commission in Compliance and Enforcement and Telecom Regulatory Policy 2018-484.Footnote1

    In Compliance and Enforcement Telecom Regulatory Policy 2016-442,Footnote2 paragraph 80, the Commission determined that best practices for opt-in filtering service were to include:

    • identifying in real-time nuisance calls based on an assessment of mass-calling activity and user feedback on that activity;
    • not blocking nuisance calls, but rather intercepting and redirecting them without user intervention such that the intended recipient still has access to the call and, to the extent possible, provide a choice of call treatment (e.g. sending intercepted calls to voice mail, requiring the caller to confirm their identity before completing the call), and quarantine voice mail messages from suspect nuisance callers from those left by other callers;
    • allowing the subscriber to maintain individual preferences such as those offered by personal blacklists or whitelists or those based on other factors (e.g. geographic location or time of day) and manage all aspects of the service through an online portal; and
    • using star codes defined by the North American Numbering Plan Administration for the configuration and operation of the service.

    Identify how CoopTel’s proposed call filtering service meets the above criteria, which are considered best practices.

  2. Identify whether the filtering solution that CoopTel proposes to implement is carried at the network level. If so, please provide the filtering techniques the company will use at the network level. If not, identify whether the proposed solution is an end-user filtering solution that is only based on "star" services.
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