Re: [Astlinux-users] SIP trunk / pstn provider

[Michael K. <li...@mk...>]

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 <da...@ry...>:
> 
> 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...@ke...> 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