<DIV>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?</DIV>
<DIV> </DIV>
<DIV>Thanks</DIV>
<DIV> </DIV>
<DIV>Mohamed.<BR><BR><B><I>Alistair Cunningham <acunningham@integrics.com></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Matt,<BR><BR>Because SER handles SIP messages, not RTP streams, it cannot 100% <BR>accurately record CDRs. For instance, if the BYE message is lost because <BR>a client crashed, SER has no way of knowing when the call ended or how <BR>much it cost. A BTBUA gets round this problem by having the RTP packets <BR>come to it, so if a client crashes, the RTP stream stops and the BTBUA <BR>knows the call has finished. The disadvantage of a BTBUA is that it adds <BR>latency and doesn't scale well, because it needs to handle all the RTP <BR>traffic.<BR><BR>I install quite a few SER and Asterisk systems for my customers, and a <BR>fix for this issue is the most frequent item I'm asked for. It's <BR>unavoidable, however, if one wants SER's scalability. What I usually <BR>recommend for them is to install a SER system (for scalability, <BR>registrations, routing of calls that don't need a CDR,
etc) fronting <BR>multiple BTBUAs such as Asterisk or Cisco (for accurate billing of PSTN <BR>calls).<BR><BR>Alistair Cunningham,<BR>Integrics Ltd,<BR>Telephony, Database, Unix consulting worldwide<BR>+44 (0)7870 699 479<BR>http://integrics.com/<BR><BR><BR>matt morris wrote:<BR>> Hello List,<BR>> <BR>> Just wondering, what is the radius account module for SER not able to <BR>> do, that would require the use of B2BUA in terms of having a CDR? <BR>> Forgive me if it is a dumb question...<BR>> <BR>> Thanks.<BR>> <BR>> _________________________________________________________________<BR>> Scan and help eliminate destructive viruses from your inbound and <BR>> outbound e-mail and attachments. <BR>> http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=http://hotmail.com/enca&HL=Market_MSNIS_Taglines <BR>> Start enjoying all the benefits of MSNŽ Premium right now and get the <BR>> first two months
FREE*.<BR>> <BR>> _______________________________________________<BR>> Serusers mailing list<BR>> serusers@lists.iptel.org<BR>> http://lists.iptel.org/mailman/listinfo/serusers<BR>> <BR>> <BR><BR>_______________________________________________<BR>Serusers mailing list<BR>serusers@lists.iptel.org<BR>http://lists.iptel.org/mailman/listinfo/serusers<BR></BLOCKQUOTE><p><br><hr size=1>Post your free ad now! <a href="http://ca.personals.yahoo.com/"><b>Yahoo! Canada Personals</b></a><br>