Recently we have bought several dozens GRP2603P phones and all of them sometime have two issues:
- The phone is idle. After handset was up, phone remains in the idle state (no tone, no screen change). If push and release hook switch, phone goes to dialing state.
- The phone rings. After handset was up the phone keeps ringing. If push and release hook switch, phone stop ringing and goes to call state.
IP server is FreePBX 15.0.21 with Asterisk Version 16.20.0.
Phones’ FW is latest 188.8.131.52, but problems persist on beta 184.108.40.206 too.
I have tried lot of settings variants, but it has no effects.
Could anyone give advise to resolve this issues, i have no ideas anymore.
Thanks in advance.