Unified Messaging Play On Phone Error

[steelcoyot]

Not sure if anyone else has run into this error but every time I try to play a message to my phone I get the following error. My VoIP is Cisco Messaging 5.1

Event Type: Warning
Event Source: MSExchange Unified Messaging
Event Category: UMCore
Event ID: 1087
Date: 9/18/2007
Time: 10:58:23 AM
User: N/A
Computer: EXCH-UM
Description:
An outbound call to 2222 could not be established. The selected outbound gateway "FQDN" returned the error: "503 Service Unavailable". The Caller ID used for this call was '2222'. Contact the vendors who support your VoIP gateway and IP/PBX hardware for help troubleshooting the SIP response error code specified in the event description. You can also run diagnostic tests on your VoIP Gateway or IP/PBX hardware to make sure that the devices are operational. Additional information follows: A Sip request has failed. The current operation is 'Opening'. The session state is 'Connecting'. The remote participant is 'sip:2087@unity.asbury.org;user=phone'. The response code was '503'. The response text was 'Service Unavailable'.

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