Find the answers to how to change your phone’s batteries, access your voicemail, and more.
Frequently Asked Questions
On your phone, dial *97
Voicemail service will not work if you have opted to disable it entirely or use your own answering machine.
Your voicemail includes the following menu of options
Press 1 for new/old messages
This option gives the information about time, date and from which number the voicemail was sent. You can press 7 to delete the message you just listened to.
Press 2 to change folders
Additional options here include:
- Press 0 for new messages
- Press 1 for old messages
- Press 2 for work messages
- Press 3 for family messages
- Press 4 for friends’ messages
- Press # to cancel
Press 3 for advanced options
Additional options here include:
- Press 5 to leave a message
- Press * to return to the main menu
Press 0 for mailbox options
Additional options here include:
- Press 1 to record your unavailable message
- Press 2 to record your busy message
- Press 3 to record your name
- Press 4 to record your temporary greeting
- Press 5 to change your password
- Press * to return to the main menu
Press * for help
This option will repeat the whole menu
Press # to exit
1. If the batteries are low, slide down the battery shield at the back of your phone and then open it to reveal the batteries.

2. Insert two brand-new AAA rechargeable batteries. Do not use standard (non-rechargeable) batteries,as they are not compatible with rechargeable phones.
3. Ensure you align the positive and negative terminals correctly.
4. Slide up the battery shield to the original position.
5. Place the handset on the charger.
If the DND feature is turned on it will prevent the phone from ringing or notifying you of incoming calls.
You should see a small red circle with a white line on your display, as seen below. This indicates you will not receive incoming call notifications, and the phone will not ring.

To enable or disable the DND feature:
1. Press “Menu” to bring up the operation menu.
2. Use the arrow keys to reach “Call Features” and then navigate to the “Do Not Disturb” sub-menu.
3. Select the account on which you want to enable/disable the DND mode and then press Select.
4. Choose between the Enabled and Disabled options and press the softkey “Save” to accept the changes. A prompt message will appear, confirming that the DND is enabled/disabled.
Alternatively, you can press the mute button in the bottom-right corner of your phone to get the same result.

To adjust the ringtone volume on your device, press the left or right menu key as shown below.

To mute your standard Grandstream device, you can press the left menu key until you see the signs below.

Yes! Regardless of your current phone provider, you can transfer (port) your number to Valley Fiber seamlessly.
Important: Please do not cancel or deactivate your existing phone service until your number has been successfully ported to Valley Fiber.
To initiate the porting process, our Local Number Portability (LNP) team will require the following details:
- Your account number with your current provider
- The full name associated with the account
- In some cases, your billing or service address
Once we have this information, we will submit a porting request on your behalf. Upon successful completion of the transfer, your previous provider will automatically deactivate your number from their service.