[asterisk-dev] Some confusion about threads

[Sameer]

Hello Everybody,

I was reading a code of chan_sip.c, i was confused about how exactly
threads are used in Asterisk. Whether there is thread created for each
request made by user? or thread is created for each user? or thread is
created for each call?

and also confused about what channel exactly stands for?

can anybody please share this knowledge with me.

Thank you,

Sameer