[Serusers] SER RADIUS Accounting and B2BUA

Alistair Cunningham acunningham at integrics.com
Tue Mar 8 11:45:06 CET 2005


Mohamed,

In this circumstance I would use Asterisk or a commercial soft PBX.

Alistair Cunningham,
Integrics Ltd,
Telephony, Database, Unix consulting worldwide
+44 (0)7870 699 479
http://integrics.com/


Mohamed Omar wrote:
> when using Cisco for billing and teardown, how do you over come the 
> limitation of hairpinning Voip leg to Voip leg call on a cisco router if 
> your are not connected to a PSTN network and you have to 
> terminate on someone else gateway?
>  
> Thanks
>  
> Mohamed.
> 
> */Alistair Cunningham <acunningham at integrics.com>/* wrote:
> 
>     Matt,
> 
>     Because SER handles SIP messages, not RTP streams, it cannot 100%
>     accurately record CDRs. For instance, if the BYE message is lost
>     because
>     a client crashed, SER has no way of knowing when the call ended or how
>     much it cost. A BTBUA gets round this problem by having the RTP packets
>     come to it, so if a client crashes, the RTP stream stops and the BTBUA
>     knows the call has finished. The disadvantage of a BTBUA is that it
>     adds
>     latency and doesn't scale well, because it needs to handle all the RTP
>     traffic.
> 
>     I install quite a few SER and Asterisk systems for my customers, and a
>     fix for this issue is the most frequent item I'm asked for. It's
>     unavoidable, however, if one wants SER's scalability. What I usually
>     recommend for them is to install a SER system (for scalability,
>     registrations, routing of calls that don't need a CDR, etc) fronting
>     multiple BTBUAs such as Asterisk or Cisco (for accurate billing of PSTN
>     calls).
> 
>     Alistair Cunningham,
>     Integrics Ltd,
>     Telephony, Database, Unix consulting worldwide
>     +44 (0)7870 699 479
>     http://integrics.com/
> 
> 
>     matt morris wrote:
>      > Hello List,
>      >
>      > Just wondering, what is the radius account module for SER not
>     able to
>      > do, that would require the use of B2BUA in terms of having a CDR?
>      > Forgive me if it is a dumb question...
>      >
>      > Thanks.
>      >
>      > _________________________________________________________________
>      > Scan and help eliminate destructive viruses from your inbound and
>      > outbound e-mail and attachments.
>      >
>     http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=http://hotmail.com/enca&HL=Market_MSNIS_Taglines
> 
>      > Start enjoying all the benefits of MSN® Premium right now and get
>     the
>      > first two months FREE*.
>      >
>      > _______________________________________________
>      > Serusers mailing list
>      > serusers at lists.iptel.org
>      > http://lists.iptel.org/mailman/listinfo/serusers
>      >
>      >
> 
>     _______________________________________________
>     Serusers mailing list
>     serusers at lists.iptel.org
>     http://lists.iptel.org/mailman/listinfo/serusers
> 
> 
> ------------------------------------------------------------------------
> Post your free ad now! *Yahoo! Canada Personals* 
> <http://ca.personals.yahoo.com/>




More information about the sr-users mailing list