Sea to Sea Communications, Inc. Voicetrak was their original DOS-based call processing and voice mail system and was marketed through a national network of telephone dealers. Here are the manuals and guides for the Voicetrak system.
VoiceTrak AVM Getting Started Guide
VoiceTrak AVM Installation & Administration Guide
VoiceTrak AVM User Guide
VoiceTrak Installation & Maintenance Guide
VoiceTrak Quick Reference Guide
VoiceTrak User Guide
Voicetrak, LLC and Sea to Sea Communications, a Georgia based company and the original developer of Voicetrak back in 1991, both marketed and sold these systems. The Voicetrak DOS-based voice mail system has been supported over the years. The original VoiceTrak system returned to Sea To Sea Communications in 2006 after personnel changes at Voicetrak, LLC. Sea to Sea Communications has provided voice processing solutions since 1991.