I think CCNA-Voice would be valuable for someone who has some experience with CCM and is looking for mid-level job supporting/ designing/implementing CCM installs. I think that most people on this list are much more focused on a interoperating with carriers on a large scale, not large PBX deployments, which I *believe* the CCNA- Voice would be more use on. Robin On Aug 21, 2009, at 3:25 PM, <Rod.Dossouvi.CTR at dot.gov> <Rod.Dossouvi.CTR at dot.gov

wrote:

Got you and make sense in a way. Any good books you've been using?

Rod Dossouvi Sr Network Engineer INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202-366-9028 Mobile 240-422-4588

-----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Friday, August 21, 2009 4:24 PM To: Dossouvi, Rod CTR (FHWA) Cc: VoiceOps at voiceops.org Subject: Re: [VoiceOps] Has anyone taken the CCNA Voice Certification?

Easier and more useful to just learn & get experience doing voice.

Rod.Dossouvi.CTR at dot.gov wrote:

...

Thinking about it and need to get some input

**Rod Dossouvi**

Sr Network Engineer

INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202-366-9028

Mobile 240-422-4588

------------------------------------------------------------------------

...

_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops

-- Alex Balashov - Principal Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops

--

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