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Orsini IT, LLC Blog

Orsini IT has been serving the Miami Lakes area since 2011, providing IT Support such as technical helpdesk support, computer support, and consulting to small and medium-sized businesses. It's always been our goal to provide enterprise-level IT practices and solutions to the small business sector, with small business prices.

T-Mobile Broke SIP on iPhone with IPv6 Update

broken iphone
A funny thing happened after T-Mobile iPhones recently upgraded to iOS 10.3.1 … my SIP client stopped working! It seems that the OS update came along with new carrier settings that assigned my device an IPv6 address.  In my case, the carrier setting version is now T Mobile 28.3. After analyzing network captures from the switch side, we found that SIP UDP messages are no longer routed to the SkySwitch SIP proxy which has an IPv4 address.  But noticing that API calls made over HTTP from the same app were reaching the IPv4 web service, we concluded that TCP packets were being translated and routed correctly.   So we switched the SIP signaling to TCP and the IP...
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Tip of the Week: Try This Weird Trick to Free Up Space on Your iPhone

b2ap3_thumbnail_iphone_storage_trick_400.jpgIt’s a situation that’s all too familiar to an iPhone user: after taking a gorgeous picture, or trying to download a new app, the device flashes up a warning that there is not enough storage to complete the download. So what do you do?

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