Call problems

Hello,

we have very frequent problems with our FreePBX. Users experience call drop during conversation. In logs we can found such errors. What can be cause of this?

[2022-07-26 15:03:29] ERROR[20771][C-0000535f] func_global.c: Channel ‘SIP/trunk-xxxxxx’ not found! Variable ‘DIALSTATUS’ will be blank.

[2022-07-26 15:03:29] ERROR[20771][C-0000535f] func_global.c: Channel ‘SIP/trunk-xxxxxx’ not found! Variable ‘DIALSTATUS’ not set to ‘ANSWER’.
[2022-07-26 15:03:29] ERROR[20771][C-0000535f] func_global.c: Channel ‘SIP/trunk-xxxxxx’ not found! Variable ‘DIALSTATUS’ will be blank.

[2022-07-26 15:03:29] ERROR[20771][C-0000535f] func_global.c: Channel ‘SIP/trunk-xxxxxx’ not found! Variable ‘DIALSTATUS’ not set to ‘ANSWER’.

[2022-07-26 15:03:29] ERROR[20771][C-0000535f] func_global.c: Channel ‘SIP/trunk-xxxxxx’ not found! Variable ‘CHECK_HHO’ not set to ‘TRUE’.
[2022-07-26 15:03:29] ERROR[20771][C-0000535f] func_global.c: Channel ‘SIP/trunk-xxxxxx’ not found! Variable ‘CHECK_HHO’ will be blank.

Isolating a single log line will probably not help much. You can share an entire trace using pastebin using the instructions here: Providing Great Debug - Support Services - Documentation

I have never heard of this channel variable (nor has google) which hints you have some custom dialplan doing things. If so, stating how you’ve modified things up front is necessary.