Vonage says a cable operator was blocking the service in the midwest and that caused a massive outage last week. The news comes via Advanced IP Pipeline which reported the first incident of port blocking.
Brooke Schulz, Vonage’s vice president for corporate communications, confirmed that the company is “investigating a new instance” of service interruption that appears to be another case of port blocking. Schulz said the incident involves Vonage customers who use high-speed Internet services provided by a cable operator, somewhere in the Midwest U.S.
The company says it still doesn’t know how many customers were affected. Jeffrey Citron, Vonage CEO last week told me that “port blocking” is something that “keeps him up all the time.” Clearly, not being married to a pipe is a disadvantage for independent VoIP service providers.