Unified Communications Infrastructure

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Hi all,I've Cisco CallManager 4.x and a PBX [Siemens Hipath 4000]. I saw that Hipath 4000 support SIP. Can the CCM 4.x connect to Hipath4000 using SIP trunk? I can't find any documents about this scenario.If not, please show me how to connect Hipath ...

I'm running unity 4.2 with about 700 subscribers. I'm also running exchange 2003. I've setup new unity 5 servers on new hardware and I'm trying to find the best solution to move all the subscribers (in phases, not all at the same time) from unity 4...

I have problem with Unity, when caller External User is not able to leave voice mail after no answer timeout and busy. Call flow PTSN->h323 gateway ->ccm->Unity connectionI create a translation pattern on ccm for translate all incoming calls from PT...