Category: Telephony

There are a lot of discussion about termination charges at VON. Particularly, the recent Madison River blocking Vonage incident bring out more horror stories about Rural LECs (e.g. high termination charges). Well, what do you expect? RLEC used to be a mini-monoploy and the gateway to their communtiy. In the past, there are no way […]

Sadahiro Sato, GM of BB Phone Service Division of Softbank, gave a very informative presentation. You can find the backbone of Yahoo! BB in Japan and they have acquired Japan Telecom last year really for their backbone network across Japan. And since Yahoo! BB has 22% of the telephony market share in Japan, nearly 33% […]

The expected has happened: LECs (Local Exchange Carriers) started to block Vonage (or SIP in general) to protect their telephony services. (via Slashdot). What was surprisingly is how stupidly they did this – they could just do a bit of trottling, limited the bandwidth, drop a few packets now and then, and it would take […]

US warns on risk of net-based telephony reports FT Internet-based telephony known as voice over internet protocol, or VoIP promises lower costs and greater flexibility by using existing data networks. But a report by the National Institute of Standards and Technology, which develops technology guidelines for US government agencies, warns of the “inherent vulnerabilities” of […]

Once in a while, I would get call or email from friends who wanted to do a ‘Vonage for Asia’ and ask me what I think. By “Vonage of Asia”, the general idea revolves around an ITSP (IP Telephony Service Provider) providing flat-rate unlimited calls across Asia (or a variant of that). Well, the first […]

Okay, let me be join the echo chamber regarding the problem with Skype voicemail. I called a colleague using skype, not knowing he was in another skype session. His Skype Answering Machine picked up and I left a message. First the parties on the call with him heard me. Secondly, I heard them. Both calls […]