My office is using CUCM as per specification below.
Cisco Unified CM Administration
System version: 188.8.131.5200-6
VMware Installation: 2 vCPU Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz, disk 1: 80Gbytes, 4096Mbytes RAM, Partitions aligned
Most of our end points are CP-7841 phones and I would like to configure 3 way conference on this instead of meetme or conference now.
Actually 3 way conference among 3 extensions is ok. But if we called outside via PSTN to external two mobile or PSTN land lines, it was not ok.