What I've done before... on CUCM: - add a new Conference Bridge (Cisco Video Conference Bridge(IPVC-35xx) in CUCM V8.0.3.20000-2 - MAC address used for definition in CUCM is MAC of MCU (not EMP) - add a new Media Ressource Group with add all available Media Ressources (ANN_2, ANN_3, CFB_2, CFB_3, MOH_2, MOH_3, MTP_2, MTP_3, VCB.....) - add a new Media Ressource Group List with add the Media Ressource Group in the list on MCU (3515) with 12 Ports: - configure MCU and EMP with IP addresses and bind the EMP IP address on the IP address of the MCU - enable webaccess and configure on browser... - add on Protocols in SCCP section the IP address of the CUCM in TFTP and CallManager - check the marks, if SCCP is activated and a port is defined (standard active SCCP service prefix port 82) - in services check the mark, if SCCP services is activated for this port - restart the unit and check if the MCU is registering in CUCM The problem is, all what I have tested with different TFTP and CallManager entries, with new adding a conference bridge in CUCM - ERROR The conference Bridge cannot register itself in CUCM. I have no idea, where the problem is and I have read many community threads here and overall in the www Can someone helkp me to bring the MCU online and work with my CUCM?! The versions of IPVC-3515-MCU12 are -for MCU V5.7.0.0.21 (MP)  -for EMP V5.0.0.5 (MVP) Nachricht geändert durch Justus Weber Hardware was exchanged from CISCO (old defect hardware revision was REV-A04, new working hardware revision is REV-A01). Now registration with CUCM works. ... View more

After received many new IP Phones 6941 the active load firmware is 8.5.1.22.66. A update to V8.5.3 and V8.5.4 ends successful. For update to newest version of firmware available on store (V9.0.3) in release notes of the available versions V9.0.2, V9.0.2SR1 and V9.0.3 is a version named call V9.0.2s. To this version a update is perform first before a update to V9.0.2 and V9.0.3 can made. In online store the version V9.0.2s is not available to download. Can you tell me the correct installation procedure to bring up all te IP Phones with model type 6941 from 8.5.x to 9.0.3 and if every step to minor versions is needed?! ... View more