Gazelle Blog

Universal Call Blocking

Here’s everything you need to know about Universal Call Blocking and how it will impact you, including protecting you from unsafe calls. On December 18th 2018, the CRTC (Canadian Radio-Television and Telecommunications Commission) mandated that all Canadian carriers & telecommunications providers implement universal network-level call blocking where the caller identification purports to originate from telephone number that do not conform to established numbering plans.

Gazelle is committed to providing our clients with secure, reliable and enterprise grade telecommunications services. We celebrate this mandate from the CRTC as it will allow all Canadians to receive a higher grade of telephony service nationwide. We have answered a variety of the most common questions concerning UCB, or Universal Call Blocking below:


What is Universal Call Blocking (UCB)?
Universal Call Blocking is a CRTC mandate (CRTC decision 2018-484) to block all incoming voice calls that have malformed calling line ID information. This applies to all Canadian service providers. Malformed calling line ID information contains telephone numbers that do not comply with North American or International numbering plans. 

Network Status & Alerts System

As part of our commitment to provide personalized, enterprise grade services to our clients, Gazelle Integrated Communications is proud to announce our new Network Status & Alert System. The system will provide up to the minute updates on any announcements, service alerts, or upcoming maintenance windows occurring within the Gazelle ecosystem.

Effective immediately you will be able to check the status of our various service offerings on our Network Status page located here : http://www.gazellecorporation.com/resources/network-status

In addition, clients may opt into our service alerts email list. Upon the release of any alerts, clients will receive an immediate e-mail with the details pertaining to the alert. We encourage clients to register for this mailing list as to ensure they are provided with immediate information on any service-related concerns. To register for this complimentary service, we ask that you complete the form below.

Subscribers may opt-in to receive only specific types of alerts as follows:

Announcements : General information such as operational changes, holiday hours, and other critical information.
Maintenance: Alerts about upcoming  maintenance windows which may be service impacting.
Outages: Alerts about service interruptions affecting Gazelle products & services.

Subscribers will only receive information about the products and/or services in which they currently subscribe. All subscribers are welcome to opt-out at any time.
To complete your enrollment in the system, please send an e-mail to This email address is being protected from spambots. You need JavaScript enabled to view it., including the name, company name, e-mail address and types of alerts you wish to receive.

We are excited to continue providing you with the same level of personalized service. Should you have any questions or concerns, we welcome you to reach out to our staff who will be happy to assist.