Covad Communications has certified IP PBXs from TalkSwitch, Grandstream, Vertical and Epygi for its new Covad Integrated Access service.
IP PBXs certified by Covad include:
* TalkSwitch IP PBX equipped for VoIP (models 244/248vs, 284/288vs, 484/488vs and 844/848vs)
* Grandstream GXE502X ALL-IN-ONE IPPBX
* Vertical Xcelerator IP
* Epygi Quadro 2x and Quadro 4x IP PBX
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