I think the issue with T-Mobile CNAM taught me that everything that goes out to "the PSTN" needs to be sanitized. Don't leak anything internal. I certainly took it for granted that if the traditional network can't pass it, I don't need to think about it. But now that it's headed to all being SIP...
On Tue, Jun 6, 2017 at 9:18 AM, CCI Michael Palmer < [email protected]> wrote: > David, > I had the same issues last week, running asterisk, had a cell phone as an > alternate destination for a ring group, passing alert info, call would not > complete, and Level3 would return invalid SIP value sent (or something of > the sort), and I noticed we were sending the Alert info. We ended up taking > the alert info off the ring group and it worked. I think long term plan, > we'll strip the alert-info off on our SBC. > > Michael > > ------------------------------ > *From: *"David Wessell" <[email protected]> > *To: *"Carlos Alvarez" <[email protected]> > *Cc: *"VoiceOps ([email protected])" <[email protected]> > *Sent: *Monday, June 5, 2017 3:25:15 PM > *Subject: *Re: [VoiceOps] Blind Transfer Issue to iPhones on Verizon > > We are running asterisk 1.8.x behind a Sansay SBC. > We have tested iphones on other carriers and they work fine. We have > tested other Android phones on Verizon. They work fine. > > The only failures are iPhones on Verizons network. We've tested > termination both through Level3 and Bandwidth and have had the same > duplicatable results. > > What we found was causing the issue was the insertion of Alert Info: into > the SIP header. Asterisk lets us do this to define ring tones. If we remove > that it goes away. > > What's odd is that this never caused an issue until this past Thursday. > > Thanks > David > > > > On Mon, Jun 5, 2017 at 3:10 PM, Carlos Alvarez <[email protected]> > wrote: > >> I haven't had any complaints like this, and I know we have quite a few >> Verizon users. You implied something I want to ask specifically... >> >> Have you actually tested blind transfers to iPhones on other carriers? >> >> Have you actually tested blind transfers to other phones on Verizon? >> >> Who is your upstream? Many of them are doing private interconnects with >> the cell carriers now and when that happens signaling may change or be >> handled differently. The substitution of the CLID and/or the call leg may >> be the culprit here. >> >> >> On Mon, Jun 5, 2017 at 8:35 AM, David Wessell <[email protected]> wrote: >> >>> Hi All, >>> We're seeing an issue since 6/1/17 where blind transfers from an >>> external number to iPhones on Verizon Wireless don't ring the iPhone. Has >>> anyone else seen this? >>> >>> Scenario: >>> External caller dials in. Blind transfer is done to the Verizon iPhone. >>> The iPhone never rings. >>> External caller dials in. Warm transfer is done to the Verizon iPhone. >>> The iPhone rings. >>> Internal caller dials the Verizon iPhone and the iPhone rings. >>> >>> We've never seen this issue until 6/1/17. Has anyone else had complaints? >>> >>> Thanks >>> David >>> >>> -- >>> David Wessell >>> *Co-Owner*, Ringfree Communications, Inc. >>> [image: Ringfree Communications Logo] <http://www.ringfree.com/> >>> Phone: (828) 575-0030 x101 <82825750030> >>> Email: [email protected] >>> Website: www.ringfree.com >>> 824 Locust St. Suite 200 >>> Hendersonville, NC 28792 >>> [image: Twitter] <https://www.twitter.com/RingfreeCom> [image: Facebook] >>> <http://www.facebook.com/Ringfree> [image: LinkedIn] >>> <http://www.linkedin.com/company/ringfree-communications-llc> >>> How was your experience? >>> Tell us by taking our Customer Service Survey >>> <https://www.supersimplesurvey.com/Survey/16842/signature/>. >>> *Confidentiality Note: * This e-mail and any attachments are >>> confidential and may be protected by legal privilege. If you are not the >>> intended recipient, be aware that any disclosure, copying, distribution or >>> use of this e-mail or any attachment is prohibited. If you have received >>> this e-mail in error, please notify us immediately by returning it to the >>> sender and delete this copy from your system. Thank you for your >>> cooperation. >>> >>> _______________________________________________ >>> VoiceOps mailing list >>> [email protected] >>> https://puck.nether.net/mailman/listinfo/voiceops >>> >>> >> >> _______________________________________________ >> VoiceOps mailing list >> [email protected] >> https://puck.nether.net/mailman/listinfo/voiceops >> >> > > > -- > David Wessell > *Co-Owner*, Ringfree Communications, Inc. > [image: Ringfree Communications Logo] <http://www.ringfree.com/> > Phone: (828) 575-0030 x101 <82825750030> > Email: [email protected] > Website: www.ringfree.com > 824 Locust St. Suite 200 > Hendersonville, NC 28792 > [image: Twitter] <https://www.twitter.com/RingfreeCom> [image: Facebook] > <http://www.facebook.com/Ringfree> [image: LinkedIn] > <http://www.linkedin.com/company/ringfree-communications-llc> > How was your experience? > Tell us by taking our Customer Service Survey > <https://www.supersimplesurvey.com/Survey/16842/signature/>. > *Confidentiality Note: * This e-mail and any attachments are confidential > and may be protected by legal privilege. If you are not the intended > recipient, be aware that any disclosure, copying, distribution or use of > this e-mail or any attachment is prohibited. If you have received this > e-mail in error, please notify us immediately by returning it to the sender > and delete this copy from your system. Thank you for your cooperation. > > _______________________________________________ > VoiceOps mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/voiceops > > _______________________________________________ > VoiceOps mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/voiceops > >
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