Mark Holloway wrote:
CCNA Voice covers some basic theory and concepts of CCM but the implementation objectives are specific to CME and Unity Express.
On Aug 21, 2009, at 2:38 PM, Robin Rodriguez wrote:
Also in studying solely Cisco's use(or misuse) of VoIP, you're locked into a Cisco world which means nothing in terms of understanding VoIP from the protocol level as a whole. Here are some of the books floating around my house and work that I constantly use when it comes to VoIP. Things to consider from this short list though, I come from a systems administrator, network administration, security administration/engineering background. I'm not particular about any one specific vendor. More of a "get it working now". Securing VoIP Networks - 0-321-43734-9 SIP Handbook: Services, Technologies, and Security of Session Initiation Protocol - 142006603X Practical VoIP Security - 1597490601 Telecommunications and Data Communications Handbook - 978-0-470-04141-3 (excellent book and reference guide) I'm sure I'm not alone on this list - from the ITSP level - today I could be assisting and or configuring an Avaya trunk or PBX followed by Cisco trunk or PBX to say: Iwatsu, Asterisk, Nortel, etc.. I find it better and easier to understand the specifics of a vendor's offering just by understanding the underlying protocols. For that, I refer to the ever boring, long and drawn out RFC's., running Wild Packets or Wireshark and understanding IP, SIP packets as a whole. When all my books and Google fail, I go to my colleague who fills me in on all I'm missing or misunderstanding on VoIP - so it pays to surround yourself with knowledgeable people. -- =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ J. Oquendo SGFA, SGFE, C|EH, CNDA, CHFI, OSCP "It takes 20 years to build a reputation and five minutes to ruin it. If you think about that, you'll do things differently." - Warren Buffett 227C 5D35 7DCB 0893 95AA 4771 1DCE 1FD1 5CCD 6B5E http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x5CCD6B5E