Hi,We have two ISR4321 gateways, two E1 lines, CUCM11.5, topology like this:E1---VG1---|E1---VG2---|--MGCP---CUCMWe have 600 numbers(xxxx5[0-5]xx) from ISP, the numbers(xxxx5[0-2]xx) are normal.The numbers(xxxx5[3-5]xx) have a problem, when there is ...

Hi everyone,  there is a CUCM publisher and a subscriber in our cluster, the 'Cluster Security Mode' is set to '1', 'Device Security Profile' is set to 'Non-Secure Profile' in phone configuration, there is no Authentication, and Encrypted Config. The...