User manual

AT820

AT820 Series

Series

Series User

User

User Manual

Manual

ATCOM TECHNOLOGY CO., LIMITED www.atcom.cn

6 .2.3

.2.3

.2.3 Only

Only

Only one

one

one part

part

part can

can

can hear

hear

hear the

the

the voice

voice

voice during

during

during the

the

the call

call

A. Make an IP dial-up call to make sure the headset

’

s telephone receiver and

Mic are normal.

B. Enable STUN on web page.

C. Set STUN server as stun.3cx.com.

D. Click on “ submit ” and wait for the phone to restart.

Try

to make calls again.