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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This depends on what you mean by “not involving the service provider.”<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you are literally forwarding calls that come in on the PRI back out on the PRI, the most efficient way is with Two B-Channel Transfer (TBCT). Check it out in the wiki.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You need to make sure your carrier supports the feature.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>When you want to do a “transfer,” you have an incoming call alerting or answered, you initiate an outgoing call (using the originating ANI). You initiate the TBCT and the CARRIER completes the transfer, disconnecting both of your B channels. The carrier will later notify you when the transferred call is done, but I don’t think Asterisk handles this directly. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Note that at least one of the calls must be answered when you initiate the transfer. If you are doing “unattended” transfer, you will, typically, leave the incoming call alerting until the outbound call answers, then complete the transfer. An “attended” transfer would generally answer the incoming call, play a message, do some IVR doodling, or chat with an agent then initiate the transfer.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Have fun<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> --Don<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] <b>On Behalf Of </b>Rizwan H Qureshi<br><b>Sent:</b> Wednesday, March 18, 2015 7:16 AM<br><b>To:</b> Asterisk Users Mailing List - Non-Commercial Discussion<br><b>Subject:</b> Re: [asterisk-users] PRI Callerid Passthrough<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Thanks AJ and David,<o:p></o:p></p><div><p class=MsoNormal>We were actually using GSM gateways by setting busy forward number on the SIMs and just giving busy signal on every incoming call, telco took care of the forwarding and the line was free within seconds. Now we need to scale up the setup but GSM gateways a very very expensive if we want to scale upto a 1000 DIDs, which means thousand SIMs and a gateway/gateways big enough.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Wed, Mar 18, 2015 at 3:43 PM, A J Stiles <<a href="mailto:asterisk_list@earthshod.co.uk" target="_blank">asterisk_list@earthshod.co.uk</a>> wrote:<o:p></o:p></p><p class=MsoNormal>On Wednesday 18 Mar 2015, Rizwan H Qureshi wrote:<br>> Hi All,<br>> I have to forward incoming call on PRI back out to PRI but I need the<br>> original Callerid to passthrough. Is it possible with DAHDI PRI cards<br>> without involving the service provider?<br>><br>> Thanks<br><br>It depends who your service provider is!<br><br>Any PRI card can send the commands down the D-channel to set any caller ID you<br>like, but it's still up to the telco whether or not they will honour your<br>request. I know the hard way that BT will only let you identify with a number<br>you're entitled to use.<br><br>Also, remember if you have a call coming in on a PRI line and going out on<br>another PRI line, that's eating two of your thirty lines .....<br><span style='color:#888888'><br><span class=hoenzb>--</span><br><span class=hoenzb>AJS</span><br><br><span class=hoenzb>Note: Originating address only accepts e-mail from list! If replying off-</span><br><span class=hoenzb>list, change address to asterisk1list at earthshod dot co dot uk .</span></span><o:p></o:p></p><div><div><p class=MsoNormal><br>--<br>_____________________________________________________________________<br>-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com" target="_blank">http://www.api-digital.com</a> --<br>New to Asterisk? Join us for a live introductory webinar every Thurs:<br> <a href="http://www.asterisk.org/hello" target="_blank">http://www.asterisk.org/hello</a><br><br>asterisk-users mailing list<br>To UNSUBSCRIBE or update options visit:<br> <a href="http://lists.digium.com/mailman/listinfo/asterisk-users" target="_blank">http://lists.digium.com/mailman/listinfo/asterisk-users</a><o:p></o:p></p></div></div></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><div><p class=MsoNormal><span style='color:#888888'>Best Ragards<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:#888888'>Rizwan H Qureshi<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:#888888'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='color:#888888'>V: +971 (0) 528272154<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:#888888'><a href="http://linkedin.com/in/rhqureshi" target="_blank">linkedin.com/in/rhqureshi</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:#888888'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='color:#888888'><o:p> </o:p></span></p></div></div></div></div></div></body></html>