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You can control MWI behavior for IP phones at the directory number configuration or via a service parameter (systemwide) as well. If MWI is working but the prompt (i.e., the envelope icon) is not working then you may want to look at the following to verify settings for your deployment:
Message Waiting Indication
When a caller leaves a message in a mailbox, the voice-messaging system sends a message-waiting indication on to the party that received the voice message. Similarly, when the owner of a voice mailbox deletes all pending voice messages, the voice-messaging system sends a messaging-waiting indication off to inform the voice-mailbox owner that no more messages are pending.
Cisco CallManager enables administrators to configure how to turn on the handset indicator of Cisco IP Phones for pending voice messages. You can configure Cisco CallManager to do one of the following actions:
•
Light the message-waiting lamp and display the prompt if a message is waiting on primary line.
•Display the prompt if a message is waiting on primary line.
•Light the message-waiting lamp if a message is waiting on primary line.
•Light the message-waiting lamp and display the prompt if a message is waiting on any line.
•Display only the prompt, if a message is waiting on any line.
•Display only the message-waiting lamp, if a message is waiting on any line
•Do not light the message-waiting lamp or display the prompt
You can set the message-waiting indication policy by using two different methods:
•Directory Number Configuration—Use the Message Waiting Lamp Policy field to set when the handset lamp turns on for a given line. These settings are available:
–Use System Policy
–Light and Prompt
–Prompt Only
–Light Only
–None
•Service Parameter Configuration (for the Cisco CallManager service)—Use the Message Waiting Lamp Policy clusterwide service parameter to set the message-waiting indication policy for all Cisco 7900 series IP Phones. These settings are available:
–Primary Line - Light and Prompt
–Primary Line - Prompt Only
–Primary Line - Light Only
–Light and Prompt
–Prompt Only
–Light Only
–None
The message-waiting policy that you choose depends on the needs of your users. For example, an administrative assistant, who shares the manager's directory number as a secondary directory number, may want to have the policy set to Light and Prompt. The administrator can see whether the manager's line has pending voice messages. General office members, who share a line appearance with a coworker, might set the policy, so the indicator lights only when messages are pending for the primary line appearance.
For customers who do not have complex message-waiting indicator requirements, you can use the Cisco CallManager service parameter to dictate the conditions under which Cisco CallManager turns on the message-waiting lamp.
Note Users can set the message-waiting indication policy on their phones by using the Cisco CallManager User Options window. For more information, refer to the user guide for the Cisco IP Phone.
Hailey
Please rate helpful posts!
You can control MWI behavior for IP phones at the directory number configuration or via a service parameter (systemwide) as well. If MWI is working but the prompt (i.e., the envelope icon) is not working then you may want to look at the following to verify settings for your deployment:
Message Waiting Indication
When a caller leaves a message in a mailbox, the voice-messaging system sends a message-waiting indication on to the party that received the voice message. Similarly, when the owner of a voice mailbox deletes all pending voice messages, the voice-messaging system sends a messaging-waiting indication off to inform the voice-mailbox owner that no more messages are pending.
Cisco CallManager enables administrators to configure how to turn on the handset indicator of Cisco IP Phones for pending voice messages. You can configure Cisco CallManager to do one of the following actions:
•Light the message-waiting lamp and display the prompt if a message is waiting on primary line.
•Display the prompt if a message is waiting on primary line.
•Light the message-waiting lamp if a message is waiting on primary line.
•Light the message-waiting lamp and display the prompt if a message is waiting on any line.
•Display only the prompt, if a message is waiting on any line.
•Display only the message-waiting lamp, if a message is waiting on any line
•Do not light the message-waiting lamp or display the prompt
You can set the message-waiting indication policy by using two different methods:
•Directory Number Configuration—Use the Message Waiting Lamp Policy field to set when the handset lamp turns on for a given line. These settings are available:
–Use System Policy
–Light and Prompt
–Prompt Only
–Light Only
–None
•Service Parameter Configuration (for the Cisco CallManager service)—Use the Message Waiting Lamp Policy clusterwide service parameter to set the message-waiting indication policy for all Cisco 7900 series IP Phones. These settings are available:
–Primary Line - Light and Prompt
–Primary Line - Prompt Only
–Primary Line - Light Only
–Light and Prompt
–Prompt Only
–Light Only
–None
The message-waiting policy that you choose depends on the needs of your users. For example, an administrative assistant, who shares the manager's directory number as a secondary directory number, may want to have the policy set to Light and Prompt. The administrator can see whether the manager's line has pending voice messages. General office members, who share a line appearance with a coworker, might set the policy, so the indicator lights only when messages are pending for the primary line appearance.
For customers who do not have complex message-waiting indicator requirements, you can use the Cisco CallManager service parameter to dictate the conditions under which Cisco CallManager turns on the message-waiting lamp.
Note Users can set the message-waiting indication policy on their phones by using the Cisco CallManager User Options window. For more information, refer to the user guide for the Cisco IP Phone.
Hailey
Please rate helpful posts!
