Hello
Can you help me set Grandstream HT503
problem no1: it ansower the pstn call and transfer it to the ext.
problem no2: caller id does not work
thank you
Don't wast your valuable time to make works on caller id. It should be the firmware issue.
Please refer to HT488's setting 3cx.com/voip-gateways/GrandStream-HandyTone488.html - this link is no longer available, visit here: https://www.3cx.com/voip-gateways/.
It should be almost the same setting.
Hello 5qg4
Thank you for your ansower
I installed the latest firmware and still has this problem
and what you yhink about orher problem (open the pstn line and give the caller ring tone with out ext ansower