Michael Graves

New TDM-GSM Module For Asterisk

April 13, 2009
Michael Graves
Asterisk, VoIP

A short while ago Nir Simionovich noted an interesting new piece of hardware on his blog. It’s the embodiment of a novel approach to adding GSM based cellular trunks to an Asterisk server. As opposed to a freestanding external SIP-to-GSM gateway that I installed last year, someone has devised a new TDM-GSM module that emulates that FXO daughter card on a Digium TDM400P card. According to the companies web site two modules can be installed to a TDM400P card, providing Asterisk with two GSM trunks. No drivers are required beyond those loaded for the TDM400P.

Newsworthy: Siemens Gigaset S675IP

April 9, 2009
Michael Graves
VoIP

Suddenly Siemens Gigaset popped up on my radar this week, on two fronts at once. To start with Alan Lord pointed out on a post to the Asterisk Users Mailing List that Siemens have released some new firmware that adds a mute functionality to one of the soft keys when on a call.

T-Mobile To Offer New Home Phone Device

OK, so the past few days there’s been a lot of chatter about T-Mobile announcing that they intend to offer a new home phone device. It’s been noted variously at CrunchGear and NYT. From the description given, that is a tablet form factor and 7″ touch screen LCD, it would seem a logical conclusion that T-Mobile is likely tapping OpenPeak for their OpenTablet hardware.

ZipDX Profiled At Telephony Online

April 7, 2009
Michael Graves
VoIP

zipdx David Frankel’s ZipDX is the topic of an article over at Telephony Online. VUC regulars have been able to enjoy the benefits of the ZipDX wideband conference bridge for the past couple of months. The company has offered up their conference bridge to users who have the necessary phones to join the call in G.722-based wideband.

Hulu, VoIP, Hospitals & Ineffective Network Filtering

This past weekend it happens that I spent a day at Memorial Hermann Northwest Hospital. The why is a long story and not especially important for the moment. I was pleasantly surprised to find that the facility has an open guest Wifi network. That allowed me to do some work, blogging, etc while I was there.

A little later in the day we were moved to a room without a TV. Since we were going to be waiting a while I pulled out the Mini 2140 and logged into Hulu so that we could watch some TV. We watched last weeks episode of Terminator: The Sarah Conner Chronicles.

Jeff Pulver @ SXSW on HD Voice

April 6, 2009
Michael Graves
VoIP

Phil Campbell caught up with Jeff Pulver at SXSW last month for a nice little interview. Jeff passed on some thoughts about SXSW and social media. He describes some of his impression of the importance of wideband voice, and the…