| Rev | Author | # | Line |
|---|---|---|---|
| 2 | JohnMcPherson | 1 | ! Introduction |
| 1 | JohnMcPherson | 2 | These notes briefly describe what I did to get my old pentium machine running [Debian] to answer my phone and record messages. |
| 3 | |||
| 4 | apt-get install mgetty mgetty-voice mgetty-pvftools | ||
| 2 | JohnMcPherson | 5 | |
| 6 | I believe RedHat uses the name vgetty instead of mgetty-voice. | ||
| 1 | JohnMcPherson | 7 | |
| 3 | JohnMcPherson | 8 | mgetty(8) means "modem getty(8)", and the pvftools allow you to play/record/convert audio into the specific modem audio formats. |
| 1 | JohnMcPherson | 9 | |
| 10 | I tried and failed to get it to work with a USRobotics Sportster 33 and a Dynalink modem, but got it working with a USRobotics "56k Voice Faxmodem". | ||
| 2 | JohnMcPherson | 11 | |
| 12 | ! Audio Formats | ||
| 4 | WikiAdmin | 13 | A bit of background on the audio file formats. __.pvf__ is an [WLUG:Acronym] for __P__ortable __V__oice __F__ormat. It is an intermediate format used by mgetty-voice. You can convert (mono) __.wav__ (MS Wave) audio files using wavtopvf. You can then use pvftormd to convert from .pvf to the modem specific __.rmd__ format files. One caveat is that (at least for me) the audio needs to be mono and at 8000 Hz. So, I recorded a wave file of my answerphone message, and then converted it as follows: |
| 2 | JohnMcPherson | 14 | |
| 15 | # convert to mono (one channel), 8000Hz | ||
| 16 | sox recording.wav -c 1 -r 8000 greeting.wav | ||
| 17 | # convert to pvf (32 bits per sample is default) | ||
| 18 | wavtopvf -16 greeting.wav > greeting.pvf | ||
| 19 | # convert to modem-specific rmd file | ||
| 20 | pvftormd US_Robotics 1 < greeting.pvf > greeting.rmd | ||
| 21 | |||
| 22 | You can use pvfspeed to change the sample rate if you don't have sox: | ||
| 23 | pvfspeed -s 8000 greeting.pvf | pvftormd US_Robotics 1 > greeting.rmd | ||
| 24 | |||
| 25 | |||
| 26 | ! Running Vgetty | ||
| 27 | The standard way to run vgetty is from init(1). Add to/modify /etc/inittab to have a line such as: | ||
| 28 | T0:23:respawn:/usr/sbin/vgetty ttyS0 | ||
| 29 | for a modem on the first serial port, or | ||
| 30 | T1:23:respawn:/usr/sbin/vgetty ttyS1 | ||
| 31 | for the second serial port. | ||
| 32 | |||
| 33 | ! Configuring Vgetty | ||
| 34 | The main configuration file in debian is /etc/mgetty/voice.conf | ||
| 35 | The file has lots of comments telling you what all the settings mean and do. The settings I found most useful: | ||
| 36 | |||
| 37 | program vgetty | ||
| 38 | # Default number of rings to wait before picking up the phone. | ||
| 39 | rings 7 | ||
| 40 | |||
| 41 | # This means you can get vgetty to see if an incoming call is | ||
| 42 | # a telephone, and if not you can pass it to a fax program and/or | ||
| 43 | # modem program (such as mgetty :) | ||
| 44 | answer_mode voice:fax:data | ||
| 45 | |||
| 46 | # use my custom script instead of just the default, which is to | ||
| 47 | # play the greeting message, beep, and record | ||
| 48 | call_program custom_answer_script | ||
| 49 | |||
| 50 | The custom_answer_script is basically written in sh (script). Mine allows you to press a number based on who you want to leave a message for. And also allows you to press a button to stop the answerphone script, if it answers at the same time as you picking up the phone! The only thing I haven't worked out is how to stop the script if the caller hangs up... I end up with a short recording of the busy signal... | ||
| 1 | JohnMcPherson | 51 | |
| 52 | To Be Continued.... | ||
| 5 | SmittyJohn | 53 | |
| 54 | ! Re: The LUGs automated google message (which is sweet) | ||
| 55 | |||
| 56 | Although I have not installed anything yet, I wanted to add a post pointing others in the same direction I am moving in. I am attempting to find a telephone solution similar to Ovolabs Phlink http://www.ovolab.com/phlink/. Phlink is a very friendly, scriptable, telephone answering system. Unfortunently Phlink is Mac OS X only. However http://www.vocpsystem.com/ appears very similar, and will run on just about any *nix. I like the wiki, greetings from Tacoma, Washington and http://taclug.org. |
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