Call just drops out

#1
Today we have had a few problems, I don't know if this is our network or not.

I have a Draytek 2900 router with 8 external IP's each phone has it's own DMZ IP address, each phone has a unique SIP and RTP port for each account all kept in the 5004-5060 range.

Today the calls have just been cutting out, the line stays open and our Grandstream thinks the call is continuing but the caller gets dropped.

Any ideas??

Thanks

Craig

#2
Stupid question until the spanners get back on line - are your phones set to register at 60 seconds? - they tend to default to 3600.
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

#3
we have recently been made aware of some strange dns issues with some grandstream products i would suggest that you ensure that your registration expiry time is set to 60 seconds (type 1 in the box for the grandstreams) and also set the preferred dns to 195.50.91.114 (Please note that this ip address will be changing at some point next week we will post full details on the forum) if this does not help then please contact support direct so that we can look at your specific account.
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

#5
Possibly over this weekend, it's part of our major network upgrade - we'll let you know.
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

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