CallRex works very well. There are also other ways to record phone calls depending on how many you need to record, type of PSTN connections etc. Though ShoreTel does talk SIP in some respects it also uses proprietary call control mechanisms. Often when call recording integration is needed a license is also needed on the IP-PBX (depending on manufacturer) to "unscramble" the conversations so they can be recorded. I don't think it would be simple to write a quick program to do this. At least it wouldn't be for most people!
Another option is trunk side recording. If you have analog lines you can get some pretty simple devices to bridge on the incoming telco connection. same thing for T1/PRI but this gets expensive.
Another alternative if you just need to record conversations occassionally is to just intercept the analog signal between the handset and phone instrument. Even with IP phones the signal going through the handset cord is analog audio. Radio Shack and other electronic stores have very inexpensive ($10 USD) devices that plug between the phone and handset and then have a mini phono plug to run to your sound card. Then you can use media recorder or any other program to record calls right to your hard drive.
Should probably say that it is illegal in some States to record a conversation without consent on both ends. Some States only one side and others there is no legislation.
Hope this helps and good luck!
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by: grbladesPosted on 2007-02-22 at 01:11:56ID: 18585871
The way I would do it would be to setup Asterisk (http://www.asterisk.org) or Trixbox (http://www.trixbox.org/) which is basically Asterisk with a web based front end.
Then configure it to connect to ShoreTel and have your phones connect to Asterisk.
It may seem overkill to do it but Asterisk does have call recording features built in.