Hello,
I bought 5 used GXP2135’s from an eBay seller a few months back, three of them were perfect and immediately accepted a config from the UCM. But two of the three, seem to be locked down with constraint mode and non-standard admin creds. The UCM can detect them, but will not successfully push a config to the devices.
To the sellers credit, he just immediately refunded me for the two phones and told me to not even bother sending them back to him. It’s been a few months now and I’m trying to figure out if I should just chuck these in the trash - or if there might be some convoluted way of salvaging them?
Using the UCM autodiscover feature (as a SIP message), I can see that the phones are on 1.0.8.50 (and interestingly, the two that are problematic have MAC addresses that start with 000 in contrast with every other grandstream phone on my network that starts with C074). If I try via ping/ARP it doesn’t detect the version number. In all cases, it will not successfully create a config for these two phones. Not sure how relevant/useful any of that is or isn’t.
If they have to go in the trash, it’s fine - I got my money back already. But I hate e-Waste and if there’s something I can try, I’m down to give it a whirl.
