grandstream 1630

  1. Solved 3CX app registers my GXP1630 IP phone does not!

    Hello All, I rolled out the PBX express on Azure (so not local on my network). I am new to 3CX. I registered the APP on 3 phones and was able to call extension to extension with zero issues, 2 users in the US another out of the country. I purchased 2 Grandstream GXP1630 running the...