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Hi,I have a setup like shown below:IPPhone >>CUCM>>(SIP Trunk)>>Voice Gateway(ISR4351)--PSTN(ISDN PRI)Now the CUCM is working in mixed mode and Internal calls are using SRTP. We have only one internal Third-Party CA as a Root CA and there is no Subor...
Hi I am having CUCM 11.5.1.10000-6 and Phones are 8841 model IP Phone. Will this phone model supports Configuration File Encryption in this CUCM version? Regards,Shinas
Hi All,In call manager is there a mechanism by default that ip phone added in call manager is authenticated to get its config file and only its config file? Or there is something needed to configure on ip phone to make it use only its config file, so...
Hi All,We have a network setup like IP Phone and Voice Gateway are in separate network, and their network gateway is the sub-interface of Firewall. Which port should be open between IP Phone and Voice Gateway for External (PSTN) calls?I have gone thr...
HiI also faced this issue yesterday when I tried to configure mixed mode on CUCM 11.5.1SU5. Then I restarted the node and tried again and it worked fine. Regards,Shinas
Hi Haris,Suppose I have a phone with MAC AAAA.BBBB.CCCC. When I connect the phone to the network, it will request tftp server for ITL file and CUCM will provide ITL to the Phone. Next the phone will ask for configuraion file, and CUCM will give confi...
Hi Jonathan,I am having CUCM 11.5.Does this feature works in non-secure mode or should I convert to Mixed Mode for certificates-based TLS client authentication. Regards,Shinas
Hi George,But I cannot see 8841 Phone in the document for CUCM 11.5. But I can see it in Security Guide for CUCM 12.0. So, Should I upgrade the call manager version? https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/security/12_0_1/secugd/cucm...
