Fritzbox ATA is dropping incoming calls after about 4 seconds

Evening all,

My fritzbox ATA is dropping all incoming calls to my landline number
after about 4 seconds.

Just run the firmware update which is now sitting on 11.04.01, but does
anyone have any suggestions?

The telephone connected to it also seems to have stopped displaying CLI
where it used to quite happily.

Thanks for any tips.

 

Is this the pure ATA or the one containing the modem..? Was it doing it
before the firmware upgrade..? If not then that may be the problem,
suggest you ask AVM tech support, they are very good and respond quickly
as a rule.

Ivor

 

declared for all the world to hear...

It's the ATA + ADSL modem/router combo, but I don't use it as a router
as I already have one.

I've sent off a contact form and they've taken nearly 18 hours to
allocate it a case number.

Now it's got even worse, the fritzbox is now dropping all outgoing calls
after about 4 seconds. Even when I enter *11# into the phone to make it
dial out on the landline it still cuts off all calls (replacing the call
with the engaged tone) after 4 seconds making my telephone totally
useless.

 

declared for all the world to hear...

Following up to my own post here, I think I've narrowed it down to the
analogue cable which goes between the phone line wall jack and the Fritz
box analog/ISDN port.

If I receive a call in my SIPgate 01603 number the call does not drop,
and CLI is visible.
Dialling plustalks automated test number 7000 does not drop.
Dialling an 01603 number does not drop.
If I route any outgoing calls over the landline by dialling *11# it
drops after 4-5 seconds and I get the engaged tone.
If I switch off the fritz and plug my phone straight into the wall
socket I can dial out fine with no call drops, so I know the telephone
equipment itself is allright.
I have played around with the config on the Fritz but I can't get
incoming CLI on the landline.

Would anyone agree or disagree with my tests/conclusion?

 

It sounds like it could very well be that cable. Unfortunately, the analogue
phone cable uses non-standard pins on the RJ45 connector at the Fritz!Box
end (1 & 8) so you'll need the crimp tools to remake the connections as it's
unlikely you'll find a ready made cable anywhere wired correctly to replace
it with :-(

Ivor

 

I'm not sure I'd agree, but I'm sure there are plenty on here that can
make the cable up if you want one. (including myself).

 

declared for all the world to hear...

I have an RJ45 crimper, and I have re-crimped the existing connector,
making it a bit tighter. That seems to have done the trick.

Strange though that the calls would always drop after nearly 4 seconds.
I would have thought that with a dodgy cable it just wouldn't work full
stop.

 

Well, dodgy cables are exactly that, dodgy..! It could be that it was just
making intermittent contact, although why the calls dropped after exactly 4
seconds every time is rather strange. I don't really notice because I make
very few calls over the PSTN port and incoming PSTN calls get routed through
my PABX anyway so don't come into the system via that route. I'd be
interested to hear if the problem occurs again, though.

Ivor

 

declared for all the world to hear...

Scoth that. It's back to dropping calls again. Calls which come in on
the SIP number are still fine.

AVM are yet to reply. Not impressed.

 

[snip]

Hmm, they've always been ok with me. If you have that crimper, I'd try
making up a fresh cable. As I said it's pins 1 & 8 on the RJ45 plug. If
that doesn't cure it I don't know what to suggest, but it has to be worth
a try.

Ivor