Why is my phone ringing every so often without anyone calling?
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Problem: Why is my phone ringing every so often without anyone calling?
Solution: Message waiting indication- MWI service
The device will ring when new messages are waiting in the VM box of that number. The ring will not go away until the user accesses VM at 8500, retrieves and deletes the VM messages.
The device controls the MWI service.
If you do no wish to subscribe to this service, please modify the following settings:
For Sipura and LinkSys devices: access admin/advanced/all lines/Supplementary service subscription:
-MWI service: no
-VMWI service: no
For Grandstream devices: access advanced configuration settings:
SUBCRIBE for MWI: No, do not subscribe for MWI.
To adjust the existing MWI settings for Sipura/LinkSys devices: access admin/advanced/all users/ring settings:
- VMWI Ring Splash Lenght: Duration of ring splash when new messages arrive before the VMWI signal is applied (0 – 10.0s) Default is set to .5
- VMWI Ring Policy The parameter controls when a ring splash is played when a the VM server sends a SIP NOTIFY message to the SPA indicating the status of the subscriber’s mail box.
3 settings are available:
New VM Available – ring as long as there is 1 or more unread voice mail
New VM Becomes Available – ring when the number of unread voice mail changes from 0 to non-zero
New VM Arrives – ring when the number of unread voice mail increases
- New VM Available Ring On No New VM- If enabled, the SPA will play a ring splash when the VM server sends SIP NOTIFY message to the SPA indicating that there are no more unread voice mails.
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