VoIP Upgrade Module adds 8 VoIP trunks, converting a Talkswitch 240vs to a 248vs, a TalkSwitch 280vs to a 288vs, a Talkswitch 480vs to a 488vs, and a Talkswitch 840vs to a 848vs.

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Telephony, PBX & VoIP > Phone Systems > Business Phone Systems by Brand > Talkswitch PBX Phone Systems