We are newbie ini Cisco Unified Communication Manager and Cisco IP Phone-6921 IP Telephony.
We have success register Cisco IP Phone CP-6921 to Cisco Unified Communication Manager and make call between CP-6921.
We have problem when we want use conference feature, when we have active call with another CP-6921 and then we press conference button on CP-6921 to make a new call.
After our call is answered, we press soft button with conference display on our CP-6921 but on out CP-6921 display message "Unable to setup conference"
CP-6921 using SIP 220.127.116.11. for this time using 1 line
Cisco Unified Call Manager system version: 18.104.22.16800-26 (demo mode)
On Cisco Unified Call Manager Administration - Device - Phone, for CP-6921 (CP-6921.png, CP-6921_1.png and CP-6921_2.png)
Phone button template:Standard 6921 SIP
Common Phone Profile: Standard Common Phone Profile
Presense Group: Standard Presence Group
Device Securoty Profile: Cisco 6921 - Standard SIP Non-Secure Profile
SIP Profile: Standard SIP Profile
For Another configuration we use Default
- How to make line2 on CP-6921 using same directory number at line1?
- What cause CP-6921 cannot use for conference? How to solve it.
We hope you can help us to solve it.
Thanks For Your Attention