There are several options for mitigating last-mile failures, each with advantages and disadvantages both in terms of protection provided and cost. Ideally, the best scenario would be diverse last-mile paths, both cable and telco, without the need to renumber should either link fail.
The Truth Behind Free Conference Calls And Traffic Pumping
When you make a one-minute phone call, the long distance company that charges you a few cents a minute has to shell out a wee little bit to a few other entities. How little? Typically some tiny fraction of a cent. The local originating company gets a fraction of a cent for handing the call to the long distance company, a database service gets a bit to look up…
Why Impulse Isn’t a Tier-One Provider
I had an interesting experience at a recent meeting with a local government agency. The subject of purchasing Internet and advanced communication services came up and the customer mentioned that of course they wanted to go with a tier-one carrier. This got me thinking as to the technical definition of a tier-one carrier and the often confusing public perceptions of its meaning.
Cisco Switch Power Deny Issue with Polycom Phones
We ran into a rather bizarre problem a while back with a VoIP installation. The installation consisted of a cisco 3560 48-port PoE switch feeding 35 Polycom phones. Most of the phones powered up fine but a few wouldn’t boot. When a working phone was unplugged, another previously-dead phone would come to life, but the one just unplugged would then remain dead when reconnected. Checking the power…
Importing offnet numbers to Broadsoft
Impulse is a network service provider serving primarily the United States. From time to time we have clients with a global presence who need to offer integrated voice services to remote offices. This document describes configuration of the Adtran Total Access 900 series to allow foreign telephone numbers to be directed to a Broadsoft or other SIP softswitch in these cases.