Grandstream GXP 2135/2140/2170 Not Ringing
Posted: Wed May 01, 2019 9:30 am
- On the directional pad on the phone press the center button
- Press 5, or use the direction buttons to select Preferences
- Press the center button on the directional pad again
- Press the down key twice to select Sounds
- Press the center key or Select soft key
- Verify that the ring tone is not set to “silent” and the ring volume is higher than 0