Here’s an update of a terrific Google™ speech-to-text application for your Asterisk® goody bag. SMS Dictator 2.0 lets you pick up any phone on your Asterisk system, dictate a brief message, have it transcribed by Google, and then delivered as an SMS text message by entering either a 10-digit number of your choosing or by saying any name in your AsteriDex phonebook. The installation process on PBX in a Flash™ systems takes only a minute. And you’ll find Asterisk SMS Messaging to be a welcome addition to your VoIP Swiss Army Knife.
Prerequisites. For the installer to work seamlessly, you’ll need a PBX in a Flash 2 server with the PERL gvoice CLI tool. You can test whether this is working by logging into your server as root and issuing the command: gvoice. When prompted for your Google Voice account name, enter it and include @gmail.com. Then enter your password. If you get a gvoice prompt, all is well. Type quit to exit. If you get errors or the gvoice app doesn’t exist, click on the pygooglevoice link in this paragraph to get things squared away.
You’ll also need a Google Voice™ account that can be used to send the SMS messages. Today’s SMS installer will prompt you for your Google Voice account name in the format: email@example.com. Then you’ll be prompted for your Google Voice password. Once you’ve entered your credentials, the rest is automagic. With a little manual tweaking of the installation script, you can get this working on any Asterisk-based server running under Linux.
As configured, SMS Dictator™ uses extension 767 (S-M-S) to generate SMS messages. If this conflicts with an extension on your server, you can edit the extensions_custom.conf dialplan in /etc/asterisk.
Legal Disclaimer. What we’re demonstrating today is how to use a publicly accessible web resource to respond to dictation requests generated by a phone connected to your Asterisk server. We’re assuming that Google has its legal bases covered and has a right to provide the public service they are offering. We are not vouching for Google or the services being offered in any way. By using our tutorial, YOU AGREE TO ASSUME ALL RISKS, LEGAL AND OTHERWISE, ASSOCIATED WITH USE OF THIS FREELY ACCESSIBLE WEB TOOL. NO WARRANTY EXPRESS OR IMPLIED IS BEING PROVIDED BY US INCLUDING ANY IMPLIED WARRANTY OF FITNESS FOR USE OR MERCHANTABILITY. You, of course, have an absolute right not to read our articles or implement our code if you have reservations of any kind or are unwilling to assume all risks associated with such use. Sorry for legalese, but it’s the time in which we live I’m afraid. Plain English: "Don’t Shoot the Messenger!"
Removing Previous SMS Dictator Code. If you installed our earlier version of SMS Dictator, then you have a little housekeeping to do before we begin. Log into your server as root and change to the /etc/asterisk directory. Then edit extensions_custom.conf. Search through the file until you find the lines beginning with exten => 767. Delete all of those lines. If you’re using nano, Ctrl-K will delete a line at a time. Once you’ve deleted all the 767 lines, save the file: Ctrl-X, Y, and press Enter. Now continue on…
Installation. To install SMS Dictator, log into your PBX in a Flash server as root and issue the following commands:
tar zxvf sms-dictator.tgz
Accept the license agreement and fill in your Google Voice credentials when prompted. In under a minute, you’ll be ready to test things out.
Taking SMS Dictator for a Spin. Now you’re ready to try it. Pick up any phone connected to your Asterisk server. Dial S-M-S (767). When prompted, dictate a brief message and press #. If the transcription played back is correct, press 1. Or hang up and try again. Now press 1 to enter a 10-digit phone number for the SMS recipient or press 2 to speak the name of someone in your AsteriDex database. When prompted, enter the 10-digit number or say the name of the SMS recipient. If the response read back to you is correct, press 1 to send the SMS message. It’s as simple as that.
AsteriDex Integration. If you’re using AsteriDex for your contacts, then it’s pretty simple to look up SMS contact numbers from there instead of having to remember them and manually key them in. The only trick is that you may need to adjust the names slightly if Google has difficulty understanding what you’re saying. For example, Google does not like Ward but is perfectly happy with Uncle Wardy. So are we. Here’s a hint. Multi-syllable words fare better than 3 and 4 letter words.
SMS Message Blasting. The SMS messaging possibilities, of course, are endless. A lively discussion is underway in the PIAF Forums about SMS Message Blasting using Asterisk. This could include notifications to Little League teams about schedule changes, or alerts from a school about emergencies, or community alerts about tornados. You can probably think up a dozen more on your own. We’ve now released the first preview of a message blasting utility which you are welcome to download. Come join the fun. Enjoy!
Originally published: Monday, August 13, 2012
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