Discussion topic: SIP phone problems
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Message posted on 30 Dec 2023 01:09 PM
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SIP phone problems
Hi - hoping desperately that someone can help me with this. I work from work with ultra fasat fttp... I have for several years now connected a number of SIP phones to my router and had no difficulty whatsoever.
(My voip service provider is IRISH VOIP)
A couple of weeks ago two of the handsets that I was using suddenly ceased to be registered
They were a YEALINK T48G and a FANVIL X6
I have used both phones successfu;;y for about two years, both are simply programmed and extremely reliable.
I also have 2 x GIGASET GIGASET DX800A which I have also used for a couple of years without any kind of problems. They have both been configured to work on TWO lines. I have changed no settings whatsoever. However suddenly this week both phones have displayed a message NOT REGISTERED Broadband in all respects seems to be working perfectly. I have done factory resets on ALL my phones but still cannot connect. Please can anyone give me an explanation of what might be going on?
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All Replies
Message posted on 30 Dec 2023 01:43 PM
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Re: SIP phone problems
SIP port 5060/5061 must be responsive from the SIP provider, and DNS and NTP must be working with your internet provider if these fail or are blocked by Sky then the phone won't work.
Zen internet on FTTP (900Mbps down, 100Mbps up). SAT> IP (Apple 4K 2nd gen TV to LG C1 OLED UHD TV/Dolby Atmos Denon AVR, DacMagic Plus for Hi-Res audio), hosting own blog/forum (cluster), OPNsense & Zenarmor L4/L7 NGFW & DPI IDS/IPS, Asus ET12 Pro Tri-Band wifi, Linux, Gamer: Xbox Series X/i7 laptop, round-robin DNS over HTTPS, non-proprietary VoIP HD AMR-WB (G.722.2) and more... Beta tester Apple iOS/watchOS/tvOS/iPadOS/macOS.
Message posted on 30 Dec 2023 02:48 PM
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Re: SIP phone problems
On the Q and Sky Broadband Hubs I believe there's a setting to toggle SIP-ALG clamping which may be worth a try.
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
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