SIP/2.0 488 Not Acceptable Here getting when during add second call on firefox

[bhumeshdeekonda]

During multiple calls,the first remoteAudio is not audible but last added call audios are exchanging each other in firefox, but this scenario is working fine in chrome and edge.

I am getting below error in my firefox console.

SIP/2.0 488 Not Acceptable Here

Via: SIP/2.0/WSS 64.62.180.69:5060;rport;branch=z9hG4bKce921e3765cdc-4849eb4b-2e82fc

To: sip:[email protected];tag=tc4h6u3v1n

From: sip:[email protected];tag=b4fdd5bd8p

Call-ID: 10or41c184lse23vktf0

CSeq: 1 INVITE

Supported: timer,ice,replaces,outbound

Content-Length: 0

---

+0ms jssip.min.js:27087:31
JsSIP:WebSocketInterface send() +11ms jssip.min.js:27087:31
JsSIP:WARN:RTCSession emit "peerconnection:setremotedescriptionfailed" [error:DOMException: Invalid offer, no setup attribute at level 0
_connectionPromiseQueue http://localhost:23505/Dialer/jssip.min.js:19383
] +0ms jssip.min.js:27087:31
JsSIP:WARN:RTCSession _processInDialogSdpOffer() failed [error: DOMException: Invalid offer, no setup attribute at level 0
_connectionPromiseQueue http://localhost:23505/Dialer/jssip.min.js:19383