IP Telephony and Phones

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Hi I have 20, 7811 phones all working fine and i added 5 new phones but the 5 new phones they have a problem. The problem is after registering all 5 on my server once they recive a call it would be instantly cut the moment i pick up the phone.  any r...

Hello,I have an ISR 2911 with the IOS 15.3(3)M5. This gateway is configured to allow SIP Phones to register in case of a CUCM failure using the eSRST mode.Here is the configuration:voice register global mode esrst system message "Mode SRST" max-dn 20...

Thomas P by Level 1
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