Part 1 of this article is now online right here. This part describes the reasons for adding a cellular trunk, potential benefits, and walks through selecting the gateway device. Part 2 is in progress and will describe the setup and…
The first part of the article about GSM the gateway is off to the publisher at www.smallnetbuilder.com. The first part covers my motivation for adding a cellular trunk. It also describes the differences between ITSPs addressing the broad residential voice-over-broadband…
The first part of this week required that I be in Austin, TX working at a customer’s site. This is the sort of trip where I drive to and from as opposed to flying. It’s three hours drive each way, which means listening to XM radio and making phone calls.
A number of times during the period I had to call the UK to consult with associates. As much as possible I tried to do this via the newly installed Portech MV-370 GSM gateway. I’ve made around 20 calls to the UK through the gateway so far.
Remember from our prior installment that have it setup for two-stage dialing, passing incoming cellular calls out through Junction Network’s OnSIP hosted PBX.
Step 1: Get Another SIM Card
Last Friday I went down to my local T-Mobile shop and had my personal cellular plan converted to a family plan. Then I had them issue me a second SIM card, adding a new line to the plan. I told them that I’d use my old phone, an old Motorola Razr v3. I even brought it with me to the store. We used it to confirm that the SIM worked as expected.
A number of people in the VOIP user community have deployed this device already, some have even documented their efforts. Such prior art will no doubt help me get mine working also. Here are their notes: The VOIP wiki: http://www.voip-info.org/wiki/view/Setup+MV-370+GSM+Gateway+with+Asterisk…
The other day I called my cellular carrier, T-Mobile. They tell me that I can convert my plan to a “family plan” and add another phone. Further, it’d be ok if I provided the phone myself, perhaps an old GSM phone that I haven’t used in a while. I have an old Razr sitting a drawer somewhere. But I have other plans for the hardware.
I have a huge number of minutes on my plan as I often use my cell for tech support work that can go for hours. Then this week the US cellular market is rocked by new offers of “unlimited” minutes for $99/mo. That’s what I presently pay for my 2500 minute plan. Might have to change that plan soon. This just makes me think that I really should go forward with a plan to add a SIP-GSM gateway to my Astlinux setup.