BTW: I also had the "15 minutes" issue with "Deutsche Telekom" SIP-trunks here in Germany, and I could solve this by setting "session-timers=refuse" in "sip.conf" in those cases (default is "accept").
> Am 23.08.2021 um 14:31 schrieb Dan Ryson <d...@ryson.org>: > > I'm sure you've looked into this but when I hear of problems precisely at 15 > minutes, failed SIP re-invites come to mind. If so, it might be worth > exploring whether a SIP re-invite was sent but not acknowledged for some > reason. > > I was glad to hear this question regarding providers. Since it has never > come up, I presumed it was a taboo topic. As a small-time hobbyist user, my > experience is limited in scope but many years have been spent on a quest for > an ideal AstLinux fit. I've had varying degrees of success and many > disappointments. > > As AstLinux is so feature-rich, it can largely stand on its own with minimal > help from providers. As a result, I've gravitated to wholesale providers > that offer direct RTP from carriers, which typically reduces latency, > improves voice quality, and lowers cost. Although reduced cost wasn't my > primary motivator, it does pay for a $5/month Linode AstLinux droplet that's > used as a static-IP, SIP-only, proxy server and failover backup. [Note: With > many wholesale providers, you're on your own to handle calls during a PBX > outage.] > > Here are a few candidates that you may wish to explore and test. Use at your > own risk! > • Voxbeam: Used seven years for US domestic termination. I have > limited experience with their DIDs. International termination available. UK > owned and operated so may be particularly useful for calls to western Europe. > E911 is provided only by their retail product "Localphone," which has a bit > more polish and may be more akin to Vitelity. Offers both "direct" RTP and > via points of presence in US and Amsterdam. Listed first because of your > specific requirements regarding UK calls. > • AnveoDirect: Used nine years for US domestic DIDs but only recently > for US domestic termination. Some international termination available. It > is possible to select among multiple termination carriers or use their unique > least-cost-routing. Does not support registration for DIDs but I use a > static IP. Registration and E911 is provided only by their retail product > "Anveo," which I don't know much about. > • BulkVS: Six months experience but my early experience with DIDs and > US domestic termination has been good. At the very least, it's an intriguing > product worthy of review for US domestic-only use. Offers E911, US domestic > termination only. Direct RTP only. Supports registration as well as IP > authentication. Listed last only because it doesn't provide UK support. > One factor to consider when selecting termination carriers within the US is > the FCC's recent push for STIR/SHAKEN compliance (more) that adds SIP header > signatures to facilitate CallerID authentication. From a practical > standpoint in the short term, STIR/SHAKEN compliance for "little guys" like > me requires use of the same termination provider as the DID provider. > > Dan > > On Sun, Aug 22, 2021 at 05:52 PM, David Kerr <da...@kerr.net> wrote: > Can anyone recommend a good SIP trunk/pstn provider? I've been using > Vitelity for years and had been happy with them, but recently long distance > calls (well specifically calls from US to UK) have lost audio about 10-15 > minutes into the call. Immediately calling back sometimes works, or > sometimes it requires the other person to call me. > > I'm wondering if I should try a different provider. Any suggestions? > > Thanks > David Michael http://www.mksolutions.info _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org.
