USB & Bluetooth In IP Phones: A Missed Opportunity?

Last week’s VUC call with FWDs Dan Behringer brings to mind a common complaint about SIP desk phones, namely the lack of an alphanumeric keyboard. Lacking a proper keyboard it’s difficult to really push the idea of SIP URIs as a primary means of making calls.

There are a variety of approaches to overcoming this, including the use of ISNs as prescribed by the Freenum project. That project proposes a means of dialing SIP URIs indirectly, assigning them ISN numbers. Since ISNs use only numbers and the * key they can be dialed on a traditional phone keypad. It’s essentially a way of avoiding SIP URIs through indirection.

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ENUM Revisited

Over at Ars Technica Rudolf van der Berg has a nice story called, “ENUM: Dragging telephone numbers into the Internet Age.” The story includes a some nice background on the history of phone numbers and the possibilities presented by ENUM.

To get a little more into ENUM you need to go back in time just a bit. IT Conversations offers a podcast version of an Etel 2007 presentation by John Todd about ENUM. The slides from John’s presentation are also available.

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