After the SIP device answers the invitation to join the meeting, the SIP device automatically exits the meeting in a few seconds. Jigas. log output SIP peer state: Busy;

Hello, jitsi team, I have deployed jigasi. After inviting the SIP device to join the meeting, the SIP device automatically exits the meeting after answering the call. Jigasi. log output SIP peer state: Busy; However, the sip device initiates a call to join a meeting, but no voice is heard. I have been stuck on this problem for a long time but could not solve it. Please provide any advice from the jitsi team. Thanks

Key log:
2023-03-31 10:00:31.044 信息: [116] SipGatewaySession$CallPeerListener.peerStateChanged#1521: [ctx=16802280292831948776152] SIP peer state: Busy
2023-03-31 10:00:31.101 信息: [96] JvbConference$JvbCallChangeListener.callStateChanged#1439: [ctx=16802280292831948776152] JVB conference call IN_PROGRESS.
2023-03-31 10:00:31.626 信息: [103] Aes.benchmark#367: AES benchmark (of execution times expressed in nanoseconds): OpenSSL 1136, SunJCE 955, BouncyCastle 15234 for AES/CTR/NoPadding
2023-03-31 10:00:31.626 信息: [103] Aes.createCipher#433: Will employ AES implemented by SunJCE for AES/CTR/NoPadding.
2023-03-31 10:00:31.715 严重: [152] Unable to handle format: LINEAR, 48000.0 Hz, 16-bit, Mono, LittleEndian, Signed
2023-03-31 10:00:31.716 严重: [152] Failed to prefetch:
2023-03-31 10:00:31.718 严重: [151] Error: Unable to prefetch
jigasi.log (44.6 KB) (14.3 KB)

Do you have access to the sip side, what error do you see there? From the codecs configured for jigasi to use any of those supported on the other side?