[asterisk-dev] A question about the Asterisk hangup process with SS7 signalling

[tian]

Hi, guys!

I have a question about the hang up process of Asterisk PBX, especially that 
related to LIBSS7. I tried to read the source code of chan_dahdi.c, but I 
noticed that with SS7 signaling, when a call is to be hung up (i.e., when a 
REL is received from the far end), no hang up functions are called 
explicitly. I hope someone will kindly give me some description about the 
hang up process of the Asterisk when SS7 is used,  any reference is also 
welcome. Thanks in advance!

Best regards,

Tian