The message waiting indicator in telephony, is a term for a calling feature that illuminates an LED on selected telephones to notify a telephone user of waiting voicemail messages.
For this type of Grandstream device, it must be turned on manually.
1. Get the IP address of the device:
a. From the phone go to config
b. Take note of the IP address, it should look something like this: 192.168.10.1
2. Login to the web server of your Grandstream phone
a. From your computer open a new web browser
b. Type in the phone's IP address and click Enter
c. Login with the following credentials:
Password: admin or password
If its been already provisioned by us it will be:
Password: 789 or 123
3. Click on Accounts > Account 1
4. Click on SIP Settings
5. Click on Basic Settings
6. Under SUBSCRIBE for MWI change from No to Yes.
7. Click on Save and Apply