Is it possible to track a call backwards beyond the last PBX?











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We receive international calls into an Asterisk server (13.20) where some of the calls are automated, meaning there is no person involved, sort of M2M.



It is important for us to know where those automated call are coming from. Since it is easy to generate a call with faked ID we want to strengthen the authentication by identifying the original network from where the call was made.



When looking at the Asterisk logs I can see that a call came from Twilio for example, but that's it, no more tracking information.



My question:



Is it possible to track a call backwards beyond the last PBX who transferred the call to my server?






asterisk







share|improve this question






















  • How are these calls coming in ? PSTN/SIP/AIX etc.
    – user3788685
    Nov 10 at 23:50










  • I am mostly interested to track SIP calls as they have the highest probability to carry faked CLI.
    – Nino
    2 days ago










  • Here in the UK I see many calls on and to the PSTN with fake CLID daily.
    – user3788685
    2 days ago










  • it is impossible to track fake CLI but maybe , there is hint on SIP headers. so you can mirror sip port and then by Homer/wireshark , you can save sip packets. and then you can follow IP/CLI. thats all you can.
    – Ycaner
    yesterday















up vote
0
down vote

favorite












We receive international calls into an Asterisk server (13.20) where some of the calls are automated, meaning there is no person involved, sort of M2M.



It is important for us to know where those automated call are coming from. Since it is easy to generate a call with faked ID we want to strengthen the authentication by identifying the original network from where the call was made.



When looking at the Asterisk logs I can see that a call came from Twilio for example, but that's it, no more tracking information.



My question:



Is it possible to track a call backwards beyond the last PBX who transferred the call to my server?






asterisk







share|improve this question






















  • How are these calls coming in ? PSTN/SIP/AIX etc.
    – user3788685
    Nov 10 at 23:50










  • I am mostly interested to track SIP calls as they have the highest probability to carry faked CLI.
    – Nino
    2 days ago










  • Here in the UK I see many calls on and to the PSTN with fake CLID daily.
    – user3788685
    2 days ago










  • it is impossible to track fake CLI but maybe , there is hint on SIP headers. so you can mirror sip port and then by Homer/wireshark , you can save sip packets. and then you can follow IP/CLI. thats all you can.
    – Ycaner
    yesterday













up vote
0
down vote

favorite









up vote
0
down vote

favorite











We receive international calls into an Asterisk server (13.20) where some of the calls are automated, meaning there is no person involved, sort of M2M.



It is important for us to know where those automated call are coming from. Since it is easy to generate a call with faked ID we want to strengthen the authentication by identifying the original network from where the call was made.



When looking at the Asterisk logs I can see that a call came from Twilio for example, but that's it, no more tracking information.



My question:



Is it possible to track a call backwards beyond the last PBX who transferred the call to my server?






asterisk







share|improve this question













We receive international calls into an Asterisk server (13.20) where some of the calls are automated, meaning there is no person involved, sort of M2M.



It is important for us to know where those automated call are coming from. Since it is easy to generate a call with faked ID we want to strengthen the authentication by identifying the original network from where the call was made.



When looking at the Asterisk logs I can see that a call came from Twilio for example, but that's it, no more tracking information.



My question:



Is it possible to track a call backwards beyond the last PBX who transferred the call to my server?






asterisk




asterisk






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 10 at 12:01









Nino

136




136












  • How are these calls coming in ? PSTN/SIP/AIX etc.
    – user3788685
    Nov 10 at 23:50










  • I am mostly interested to track SIP calls as they have the highest probability to carry faked CLI.
    – Nino
    2 days ago










  • Here in the UK I see many calls on and to the PSTN with fake CLID daily.
    – user3788685
    2 days ago










  • it is impossible to track fake CLI but maybe , there is hint on SIP headers. so you can mirror sip port and then by Homer/wireshark , you can save sip packets. and then you can follow IP/CLI. thats all you can.
    – Ycaner
    yesterday


















  • How are these calls coming in ? PSTN/SIP/AIX etc.
    – user3788685
    Nov 10 at 23:50










  • I am mostly interested to track SIP calls as they have the highest probability to carry faked CLI.
    – Nino
    2 days ago










  • Here in the UK I see many calls on and to the PSTN with fake CLID daily.
    – user3788685
    2 days ago










  • it is impossible to track fake CLI but maybe , there is hint on SIP headers. so you can mirror sip port and then by Homer/wireshark , you can save sip packets. and then you can follow IP/CLI. thats all you can.
    – Ycaner
    yesterday
















How are these calls coming in ? PSTN/SIP/AIX etc.
– user3788685
Nov 10 at 23:50




How are these calls coming in ? PSTN/SIP/AIX etc.
– user3788685
Nov 10 at 23:50












I am mostly interested to track SIP calls as they have the highest probability to carry faked CLI.
– Nino
2 days ago




I am mostly interested to track SIP calls as they have the highest probability to carry faked CLI.
– Nino
2 days ago












Here in the UK I see many calls on and to the PSTN with fake CLID daily.
– user3788685
2 days ago




Here in the UK I see many calls on and to the PSTN with fake CLID daily.
– user3788685
2 days ago












it is impossible to track fake CLI but maybe , there is hint on SIP headers. so you can mirror sip port and then by Homer/wireshark , you can save sip packets. and then you can follow IP/CLI. thats all you can.
– Ycaner
yesterday




it is impossible to track fake CLI but maybe , there is hint on SIP headers. so you can mirror sip port and then by Homer/wireshark , you can save sip packets. and then you can follow IP/CLI. thats all you can.
– Ycaner
yesterday












1 Answer
1






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oldest

votes

















up vote
0
down vote













Some operators send some tracking in sip headers



For see more info, check sip debug.



asterisk -r

sip set debug on


However most of operators not provide for clients info about path of calls, some even not store it for internal use.






share|improve this answer





















  • "sip set debug on" is how I get the information about the last leg, as explained above this is not enough.
    – Nino
    2 days ago










  • Sorry, no way get info provider not want you see.
    – arheops
    2 days ago











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1 Answer
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active

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1 Answer
1






active

oldest

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active

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active

oldest

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up vote
0
down vote













Some operators send some tracking in sip headers



For see more info, check sip debug.



asterisk -r

sip set debug on


However most of operators not provide for clients info about path of calls, some even not store it for internal use.






share|improve this answer





















  • "sip set debug on" is how I get the information about the last leg, as explained above this is not enough.
    – Nino
    2 days ago










  • Sorry, no way get info provider not want you see.
    – arheops
    2 days ago















up vote
0
down vote













Some operators send some tracking in sip headers



For see more info, check sip debug.



asterisk -r

sip set debug on


However most of operators not provide for clients info about path of calls, some even not store it for internal use.






share|improve this answer





















  • "sip set debug on" is how I get the information about the last leg, as explained above this is not enough.
    – Nino
    2 days ago










  • Sorry, no way get info provider not want you see.
    – arheops
    2 days ago













up vote
0
down vote










up vote
0
down vote









Some operators send some tracking in sip headers



For see more info, check sip debug.



asterisk -r

sip set debug on


However most of operators not provide for clients info about path of calls, some even not store it for internal use.






share|improve this answer












Some operators send some tracking in sip headers



For see more info, check sip debug.



asterisk -r

sip set debug on


However most of operators not provide for clients info about path of calls, some even not store it for internal use.







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 11 at 2:07









arheops

11.8k11122




11.8k11122












  • "sip set debug on" is how I get the information about the last leg, as explained above this is not enough.
    – Nino
    2 days ago










  • Sorry, no way get info provider not want you see.
    – arheops
    2 days ago


















  • "sip set debug on" is how I get the information about the last leg, as explained above this is not enough.
    – Nino
    2 days ago










  • Sorry, no way get info provider not want you see.
    – arheops
    2 days ago
















"sip set debug on" is how I get the information about the last leg, as explained above this is not enough.
– Nino
2 days ago




"sip set debug on" is how I get the information about the last leg, as explained above this is not enough.
– Nino
2 days ago












Sorry, no way get info provider not want you see.
– arheops
2 days ago




Sorry, no way get info provider not want you see.
– arheops
2 days ago


















 

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