I run a PBX as a pro-bono project for a state division of a national public-service non-profit. We have a few dozen Grandstream phones, mostly GXP1400, and need a few dozen more.
I am having a support issue with Grandstream and am looking for alternatives for our next major purchase.
Can any of you suggest an alternative for single- and two-line phones at about the same price point? Being a non-profit that exists largely on donations, we need to keep costs as low as we can.