The Grandstream also affords buyers more ... An extender base allows you to scale up your phone setup to meet your office needs. There is a wide range of VoIP phone providers to choose from ...

Research to find out why my Grandstream phone does not use an IPv4 SIP account when Prefer IPv6 is enabled. For full details, please visit our wiki on Github. I have a Grandstream GRP2612 VOIP phone ...

Our collection of the best phone adapters allows you to ... With three-way voice conferencing also built in, the Grandstream adds enhanced features for an office environment, including support ...