Which VoIP Adaptor do you recommend?
If you want to connect a standard analogue or DECT telephone to our system, we recommend you use the Linksys PAP2T VoIP Adaptor.If you want to use a true voip phone handset, we re...
How do I know I have Voicemail?
An email is sent to you with notification, and the voicemail is attached in .wav format.
Under the "extensions" option, you can also opt for SMS notification.
On some phones (e.g. the sipura) it might also change the dial tone so th...
How do I collect my voicemails?
You can collect your voicemail two ways:From your phone dial *1 or 185 You can also dial 0870 861 6661 or 01225 800899. You will be asked for your mailbox number (your extension number) and a password. Please note that u...
How do I transfer a phone call?
Call Transfer is fully supported for our Centrex Customers.
It may work for single line customers, but it is not supported.
The following scenarios are known to work:
Sipura Adaptors
...
How do I disable the Email notification of voicemails?
Our system automatically emails the voicemail and uses the email address that is allocated to the extension in the VoIP control panel. If you set this email to a blank email address then the email will not be sent....
What is the SIP URL for connecting to a Gradwell Extension
For a Gradwell extension, the URL takes the form
sip:extn@sip.gradwell.net
For voicemail you would use
sip:*1@sip.gradwell.net...
What codecs do you allow?
For calls sent/recieved via the PSTN network that are forwarded to an extension not using the following facilities:
Huntgroups
Voicemail
IVR
our system supports g729-a, g711-u and g711-a.
For calls between two SIP de...
I cannot access my Voice Mailbox
I have dialed *1 from my phone and the mailbox system asks me for my mailbox number. I have entered my mailbox and then the system goes quiet and eventually hangs up.What am I doing wrong?
This problem is caused by having the DTMF mode...
Firewall and Nat Issues.
If your computer is behind a firewall, certain ports must be open to allow yourVoIP Phone/Adaptor to communicate with our Servers.The following range of ports are the required ports you need to open for various hardware...
My Control panel shows that my phone is logged in when it is unplugged.
Problem
In the Voip Control panel under the Extensions section there is a status field that shows if the extension is "Online".
This will remain in the "Online" status until the registration period set on your phone has expired....
Why does my Telephone keep ringing once every 10 minutes?
This is our system telling your phone/adaptor that you have voicemail waiting.
From your phone dial *1 or 185 to collect your voicemail...
Why does my phone/adaptor register but I cannot receive incoming calls?
This is a common problem. It appears that some combinations of phone/adaptors and DHCP servers do not communicate the Primary/Secondary DNS servers settings correctly.
The solution is to manually set the Primary/Secondary DNS server in your ada...
How do I forward a call directly to and extensions' Voicemail?
In order to transfer a call directly to an extensions' voicemail without the extension ringing you can do the following:
You will need to use one of the unattended transfer methods so that the caller hears the full "record your message" promp...
What providers do you have cross calling arrangements with?
We have cross calling arrangements with the following VoIP providers.
This means that you can call between providers for free.
...
VoIP Centrex Service Issues July 2005
What problems have Gradwell been having with their Centrex Service this week?
We've experienced a number of problems with customers who are using our nat.gradwell.net outbound proxy this week (13th July 2005). This has included:
...
How do I set up the dial plan on my adaptor/phone?
We recommend that you use this dial plan with your VoIP adaptor/phone as we have tested it extensively with Gradwells' VoIP service.
( *x. | **x. | 0xxx xxx xxx. | 186 xxx xxxx | [1-8]xx | [1-8]xxx | [1-9]xx xxxx | 00 xxxxx x. | 141 0 x. | 1470 0 x. )...
Centrex Extension Divert Modes
For customers using the divert facility on a Centrex extension, there are now 3 divert modes available with slightly different behaviour.
Delayed Parallel:
This is the original Centrex style of divert, which works by...
Geographic Number Portability
Porting exisiting numbers
It is possible to port exisiting BT telephone numbers, subject to survey, from the following area codes:
...
What is NAT?
What is NAT?
NAT (Network Address Translation) is a technology most commonly used by firewalls and routers to allow multiple devices on a LAN with 'private' IP addresses to share a single public IP address.
A private IP address i...
Email2Fax
To use the Gradwell Email2Fax service the document to be faxed must be attached to an email and sent to @fax.gradwell.net (e.g. 01225800801@fax.gradwell.net). The email must contain your account key either in the subject field or as the user part...
Useful VoIP numbers and contact details
If you need assistance with your virtual PBX, please contact support@gradwell.net in the first instance.The table below lists some useful numbers (only available on the VoIP handset unless otherwise no...
Using multiple VoIP devices behind a NAT router
When multiple VoIP devices are used behind a NAT firewall, it is important to make sure the correct ports are being forwarded to the correct devices otherwise problems such as all phones ringing, no phones ringing, one way audio etc will occur.Th...
Fax (T.38) Support On International Numbers
The following international countries can be used with fax services: Argentina, Australia, Austria, Belgium, Bulgaria, Canada, Chile, El Salvador, Italy, Mex...
