What's the problem with IAX2?

Question

Asterisk

Hello. There was a strange problem with Asterisks on IAX2. host failed to

authenticate as pbx
[
s2431 ]
_
_ qualify=yes trunk=yes [pbx] type=friend username=s2431 secret=password auth=plaintext host=192.168.31.31 context=fromiax peercontext=fromiax qualify=yes trunk=yes What needs to be fixed? Complete error


chan_iax2.c:10522 socket_process: Host 192.168.31.31 failed to authenticate as pbx
Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 002 Type: IAX Subclass: ACK
Timestamp: 00009ms SCall: 02305 DCall: 27557 [192.168. 31.31:4569]
Tx-Frame Retry[000] -- OSeqno: 001 ISeqno: 002 Type: IAX Subclass: REJECT
Timestamp: 00013ms SCall: 02305 DCall: 27557 [192.168.31.31:4569]
CAUSE : No authority found
CAUSE CODE : 50