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Cisco Bug: CSCvv04725 - 8821 has no dial tone after fallback from srst to cucm

Last Modified

Jul 22, 2020

Products (1)

  • Cisco IP Phone 8800 Series

Known Affected Releases

11.0(5)MN229

Description (partial)

Symptom:
8821 has no dial tone after fallback from srst to cucm

Conditions:
CUCM load: 12.5.1.13900-118
Phone load: sip8821.11-0-6-1

Description:
8821 has no dial tone after fallback from srst to cucm

Steps:
1. Phone A is registered with UCM which in turn is integrated with Unity connection voicemail system. Set "Audible MWI Policy" to On.
2. UCM cluster has a UCM + SRST in it. Leave a voice mail on line 1 of phone A.
3. Shutdown UCM1.
4. After phone A failover to SRST, go OffHook on phone A. Listen to the dial tone on the phone. Go OnHook.
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  • Status
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