The CRTC said it might consider preventative regulations after a dispute involving two phone service providers resulted in lost telephone service for 27,000 Canadian phone number holders. On Jan. 15, Iristel Inc. disconnected service used by NetTalk.com Inc. customers following a dispute between the companies due to non-payment. Service was restored on Jan. 20 with the help of commission staff. A letter from Chris Seidl, executive director of telecommunications at the CRTC, said the commission is “still exploring whether regulations are required in order to address similar situations from occurring again in the future.” Posted Wednesday on the CRTC’s website, the letter to Samer Bishay, president and CEO of Iristel, and Nicholas Kyriakides, chief operating officer of Miami-based NetTALK, a VoIP provider, said that both providers shared fault for leaving Canadians without service. Seidl wrote that NetTALK had an opportunity to port numbers but did not move fast enough after Iristel warned that it would disconnect service. But he also said Iristel could have co-operated more with NetTALK knowing that it had intentions to port numbers. “It does not seem that the parties seriously took into consideration the negative impact of their actions on Canadians,” Seidl wrote in the letter. Seidl added that service providers should not use a dispute as a reason to not abide by the commission’s regulatory requirements, and that parties should notify the commission if there is an imminent disconnection. “In the future, parties are to consider Commission staff-assisted mediation to avoid negative consequences on their end-customers arising from disconnection,” the letter said.