CUCM 8.6.2
CUC 8.6.2
Hello,
Has anyone experienced an issue when a person calling from a Verizon iPhone consistently cannot hear the called parties greeting play or leave a message? I have some users with Verizon iPhones that are reporting this issue. Our entire company has been converted to Cisco’s phone system.
Problem Example:
Employee A calls from a Verizon iPhone to Employee B’s DID, Employee B doesn't answer the call within the standard RNA duration, when the greeting should play but they hear nothing but silence. Occurs when calling any DID number at that location.
- Attempts to leave a message anyway are unsuccessful.
- Attempts to call the site’s main number and then be transferred to the DID, were also unsuccessful.
Successful Example:
Calls same DID number but with any other type of smartphone or the Verizon iPhone (noted below) - is able to hear the greeting play and leave a message.
So, far I’ve narrow down the Verizon iPhone phone specs:
Problematic phone is:
Carrier: Verizon
Model (4s, 5s, 5c..): iPhone 4s
Current IOS version: 7.1.2
Successful phone is:
Carrier: Verizon
Model (4s, 5s, 5c..): iPhone 4s
Current IOS version: 7.1.1 (11D201)
Anyone have any suggestions besides switching Carriers?
