We can exchange/upgrade your MAX TNT and APX-8000 shelf controller to VOIP, SIP and other features!

We can exchange your DSL-TNT shelf controller for a MAX-TNT one, essentially converting your DSL-TNT into MAX-TNT (and vice versa).

Prices start as low as $20 - contact us for a quote.

All our replacement cards are in excellent shape and of course they are 100% tested and guaranteed for a year.

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