Problem with phone

[acastilloh5690]

Hi, I have a problem with a phone, for external calls the call is successful, but only the remote device can hear. How can I solve this.

[Vaijanath Sonvane]

Hi,

Which components are involved in this call? (Cisco Phone Model, CUCM/CME, Router Model, MGCP/SIP/H323, Any Firewall)

It is better if you can provide a network diagram with all the details.

[acastilloh5690]

Thank you, I already solved the problem. It was a CSS profile that was assigned wrong.