Unified Communications Infrastructure

Dear All, Hope this finds you well, Kindly we have a problem the phones not registering in the CUCM it said TFTP Timeout I think the problem in the TFTP because it is not running and when I want to start the service it is start from less then 30 seco...

Can anyone help me to clarify for using the Unity Express on ISR4321 ?I will buy CME (License) for ISR4321 to use for Branches only. Then I want to use IVR (Unity Express).My question is what do I need to buy more ? If tell me the part number of item...

We have been asked recently how hard it would be to change our dial plan to use a number other than 9 to get an outside line. There have been several instances where employees at one of our offices have mistakenely dialed 911. Our engineer with all t...

Hi,DX80 device, when i am trying to register it with CUCM, is showing Failed: 485 Ambiguous / Device type mismatch.If i register it with VCS, it gets registered.Is there any compatibility issue with CUCM.Kindly help.The event log file of DX80 is atta...

Hello, I have a need to advertise one calling number when dialing outside the building/customers and the billing telephone number when dialing 911.   My question is, is it possible to have an External Phone Number Mask on your directory number be ove...

Hello,we did an FW upgrade on endpoints compatible with CE 9.6.1 (SX20, SX80, DX80, SX10 etc.) and that worked fine. With new FW all users can easily click 'Factory reset' - just choosing Settings -> Factory Reset, this is not secure (or good) option...

Hello everyone,We are facing an issue regarding call forwarding on no answer to voicemail.About the lab :We have a CUCM cluster connect to a CUC cluster through a SIP trunk.CUCM version 12.5.1.10000-22@ ip Call manager : 192.168.1.1CUC version 12.5.1...

Hello guysI'm using CUCM version 6.1.2.1000-13 and have two Subscribe Services (Login/logout & Login/logout(Backup)) with all IP Phone everything is OK except two of them (I deleted them in past and want to add them again)when I press on Services but...