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EXHIBIT 99.1 NEWS RELEASE Sprint Canada awarded Silver Partner Certification from Cisco Systems TORONTO, Ontario, August 9, 2004 Sprint Canada Inc., a national provider of
business and residential telecommunications services and a wholly-owned
subsidiary of Call-Net Enterprises Inc., today announced that it has been
awarded the Silver Partner Certification from Cisco Systems. The Cisco® Channel Partner program provides Sprint Canada with the resource
framework to develop an expertise to sell, plan, design, implement and operate
Cisco networking solutions. To earn Silver certification, Sprint Canada had to
meet or surpass the stringent personnel, training, customer satisfaction,
specialization, and post-sales support requirements set forth by Cisco. The silver certification proves we offer the highest levels of customer
satisfaction, quality, technical resources and well managed internal processes
and gives Sprint Canada additional leverage to compete in the Internet Protocol
(IP) marketplace, said Greg McCamus, president, Sprint Canada Business
Solutions. We are working with Cisco to develop differentiated IP solutions.
The silver certification further strengthens our relationship  The Cisco Channel Partner program provides state-of-the-art technical and
sales training so that certified partners can increase their ability to
deliver services related to the latest Cisco technologies for maximized
productivity. Cisco Silver Certified partners are recognized and
rewarded for employing some of the industrys best-trained network
technicians who can demonstrate their expertise in planning, designing,
implementing and supporting Cisco network solutions. These teams of
network technicians are audited annually to ensure that they consistently
deliver industry-leading support and maintain the rigorous Cisco
standards for network expertise and support capabilities. We value the commitment and expertise that Sprint Canada has demonstrated and
look forward to a continued successful partnership, said Lui Fogolini,
vice-president of service provider operations at Cisco Systems Canada. Sprint Canada owns and operates one of Canadas largest national native IP
networks which is Cisco Multiservice VPN certified and continuously monitored
to ensure it meets Ciscos stringent standards for delay, jitter and packet
loss. A multi-service VPN network enables customers to lower costs by running
voice, data and video over one highly secure IP infrastructure network. About Sprint Canada Inc.
Sprint Canada Inc., a wholly owned subsidiary of Call-Net Enterprises Inc.,
(TSX: FON, FON.B), is a leading Canadian integrated communications solutions
provider of home phone, wireless, long distance and IP services to households,
and local, long distance, toll free, enhanced voice, data and IP services to
businesses across Canada. Call-Net, headquartered in Toronto, owns and operates
an extensive national fibre network, has over 148 co-locations in five major
urban areas including 31 municipalities and maintains network facilities in the
United States and the United Kingdom. For more information, visit
www.callnet.ca and www.sprint.ca. For further information:
Deborah Trouten
Corporate Communications
416-718-6733
dtrouten@sprint.ca