No matter if you just want to use this 1841 as a voice gateway (sip/h323) or as a sbc, I can do the project. I am a certified CCVP/CCNP with extensive experience working with CCM/CCME/CUBE. If you need help with your linux servers, I can do that as well: i am brainbench Linux certified, rank #36 within US (from about 200.000 test takers).