You'll also need to vigilant about turning the recorder on and off to save on tape and be precise about labeling and filing them. Even so, the costs are not as low as they appear. If you'd prefer not to slog through tapes via the rewind and forward button, there are digital voice loggers. These devices connect to your phone or phone system and record conversations onto a hard drive, with information like date and time automatically tagged to each conversation. When shopping for a digital voice logger, you'll need to know how many channels, or simultaneous conversations, you want to record.
Most systems can record no fewer than four or eight channels.
Check out the software, too. You'll want an interface that makes it easy to pull up a phone call. It should also be easy to manage the calls, too. While the call logger should be compatible with your desktop operating system, having one that's compatible with your network can be a plus. Digital recorders don't come cheap.