Audio is not coming on both ends in spark voice call using Asterisk PBX

I have configured the Asterisk PBX in Openfire users also configured. Now when i am trying to call from one user to another user Using Spark client call id coming and receiver is able to accept the call but no user is getting voice at their ends.

Please suggest something if there something is missing… Thanks in advanced.

the sip phone and audio in spark has been broken for a while. its unlikely to be fixed. you may want to look into a different client.