Adds capacity for 2 traditional phone lines and 4 additional local extensions to TalkSwitch 240vs series phone systems.
Compatible with the following TalkSwitch models:
- TalkSwitch 240vs
- TalkSwitch 244vs
- TalkSwitch 248vs
Converts a TalksSwitch 240 to a 480vs, a 244vs into a 484vs or a 248vs into a 288vs.
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