Hello all,
I wondering if you guys could provide me with some advise. We have
developed a simple management tool for a small site which is
architected in the following way:
Server A <==> Server B <==> Server C
Server A is an asterisk server with a TE410P which connects to the
PSTN as well as to a couple of SIP VoIP termination providers.
Server B is another asterisk server which handles IAX clients as well
as voicemail and queue applications.
Server C is a small SER server which handles SIP clients.
Internal SIP extensions calling each other (SIP-to-SIP) is all
handled by Server C. Internal IAX extensions calling each other (IAX-
to-IAX) is all handled by Server B. SIP-to-IAX extension calling as
well as SIP clients checking their voicemail is handled between
Server B-to-Server C.
Only when IAX or SIP clients need to make external calls, are calls
routed to Server A, either Server B-to-Server A or Server C-to-Server
A. At the same time, whenever an outside call comes in, Server A will
send it to Server B (if it's for an IAX client or queue application)
or to Server C (if it's for a SIP client) and Server C will send to
Server B (in case it needs the voicemail application).
Overall, this may be more complicated than it needs to, but the
client feels this will allow greater scaleability for future needs.
Anyway, now the client wants to bill certain usage only when calls go
to the PSTN or to the SIP termination providers. In other words,
whenever a calls goes through Server A (whether in/outbound), the
client wants to be able to bill for usage. The question I have is
which CDR should we base billing on? Should we bill on CDR from
Server A, B, or C? Or should we correlate all three CDR for audit
control and potentially more accurate billing? Or should we just use
Server A's CDR for billing?
The "problem" I have is that if I only base it on Server A's CDR,
I
won't really know which extension made the call. All I will now if
that Server B or Server C made an call through a trunk (whether IAX
or SIP trunk). If I base it on Server B or Server C, I will get a lot
of unnecessary CDR entries for extension-to-extension or extension-to-
voicemail calling, etc, where I'm only interested in "toll" calls.
Any advise?
Thanks,
Waldo
