Alternate title: What are the unique identifiers Asterisk sends when you make a call?
This is a general telephony question that’s been on my mind ever since I started learning Asterisk. I really didn’t know how to ask this so I split it into 3 questions.
It’s common knowledge that if you want to trace a phone call you dial *57, but how does that apply to calls made from an Asterisk system hosted on a cloud server that might not even have an Inbound route?
Are they traceable? Could you explain how the tracing system works?
To make the situation even more complicated what about a DISA call?
If you attempted to *57 a call coming from a DISA route would you get information for the original caller or the PBX they are calling through?
My guess would be the PBX acts as a proxy. Is that correct?
Is there a way to blacklist another PBX server from calling into your PBX?