Hi - thanks to everyone for the replies (and the phone call), they have
all been really helpful and help confirm I'm not going mad.
We'd ditch ADLS in a flash if there was another option. UFB by July
2017. Apparently.
Cheers,
Roger
On 19/04/2016 5:12 p.m., Pete Mundy wrote:
The Draytek routers can definitely be problematic with SIP! I've had
my fair share. Issues completely resolved by swapping hardware to
another vendor; no other changes required.
However there is another less drastic trick you can use since you're
using 2talk. In essence, one just needs to avoid the broken SIP ALG
code in the NAT portion of the router. Ironically, simply disabling it
via the router's UI often doesn't work (speaks volumes about the code
doesn't it), however it can very easily be achieved by simply changing
the signalling to another port, if your upstream SIP host supports it.
This effectively bypasses the ALG completely. So much for DPI! It
never looks any further than layer 4.
Luckily for you, 2talk do support an alternative port! Just use port
'50600' instead.
Hope this helps,
Pete
(VoIP is my day-job :)
On 18/04/2016, at 10:23 am, Roger Searle <ro...@stepahead.org.nz
<mailto:ro...@stepahead.org.nz>> wrote:
Hi everyone, I am seeing experience or recommendations on a reliable
modem/router for our in-house VoIP system (FreePBX / Asterisk to make
it list relevant) to replace one that is now showing some
unreliability. Service provider is 2talk on an ADSL line dedicated
to VoIP.
We initially had a recommended DrayTek Vigor120 which wouldn't ever
establish a trunk (SIP peering) with 2talk despite the best efforts
of a (well-known on this list) expert. Whereas a cheap Belkin thing
we had spare would work - this is the device that is now needing
replacement. The 2talk support pages are often not very helpful or
out of date, however the BYOD requirements listed include SIP V2 or
above compliant, one of iLBC, GSM, G.711 codec (our server uses gsm),
T.38 pass through (for faxing), and support for H.264 or H.263
(future proofing for video calling). I'll admit to total confusion
about PPPoE/PPPoA/passthrough requirements.
Any specific models anyone has found to be good, including
better/other DrayTek devices, in particular with a 2talk service,
would be welcomed - with first lot of thanks in advance :)
Cheers,
Roger
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