Dragon0x40
asked on
What does a mid level network engineer need to know about ip and Legacy Phone Systems
These systems tie into the network and I undertand the basics sip, rtp, g711, gateways, gatekeepers, etc..
But components such as clans, elans, ipsi, medpro, ESS, ETS, PBX, session border controllers, tftp control servers, etc.. seem to be vital in the knowledge base of a systems engineer to help troubleshoot network problems or to verify that the network is not the problem.
Can someone explain what this items do and how to determine if they are the problem or the network is the problem?
Just a link or a book reference would be fine.
But I am having a hard time finding a definition for ETS and I would like a brief explanation of what a Session Border Controller does?
My understanding is that the mechanics of VOIP is pretty simple but the different implementations, features and unified communication is what makes it difficult.
So if I can get those basic mechanics down solid then I believe the implementation differences would be easier to master and work with.
But components such as clans, elans, ipsi, medpro, ESS, ETS, PBX, session border controllers, tftp control servers, etc.. seem to be vital in the knowledge base of a systems engineer to help troubleshoot network problems or to verify that the network is not the problem.
Can someone explain what this items do and how to determine if they are the problem or the network is the problem?
Just a link or a book reference would be fine.
But I am having a hard time finding a definition for ETS and I would like a brief explanation of what a Session Border Controller does?
My understanding is that the mechanics of VOIP is pretty simple but the different implementations, features and unified communication is what makes it difficult.
So if I can get those basic mechanics down solid then I believe the implementation differences would be easier to master and work with.
gheist
Legacy is analogue PBX. TFTP somehow does not go along there.
ASKER
Good point. I don't have experience working on analog PBX so I don't really understand how the transition from a legacy PBX to a new VOIP system occurs.
You ask too much. Some CISCO terms slip through, so keep asking them since you are at it.
Yes, agree with gheist . . . You are asking for someone to do your research for you. You csn google sesdion border controller or go to Acme Packets and read about SBCs (basically they provive among other things pinholing to allow call control and media messaging environment protection - hihg volume).
As to what a mid level egineer should know . . . Depends. A voice engineer would have deeper voce network than a data network engineer. A network design engineer needs exoertise in all aspects of neteorking ...
Steve
As to what a mid level egineer should know . . . Depends. A voice engineer would have deeper voce network than a data network engineer. A network design engineer needs exoertise in all aspects of neteorking ...
Steve
ASKER
I have been on the Acme site for Session Border Controllers before and from what I remember there was not that much information for someone trying to learn how everything fits together. Does every VOIP deployment need or use a seperate unit as an SBC or just Avaya, Nortel, etc.?
Does Cisco VOIP need an SBC?
I will research pinholing but even after I understand what the definition of pinholing is will I know when to use it?
I have had discussions with people about this before about doing research. Yes cisco.com probably has 80% of everything that you will ever need to know but one lifetime is not enough to read every white paper, config guide, product literature, etc.. so sometimes I ask if the system can be generalized at a higher level and then when I research the component parts I will learn it more efficiently. Can you imagine going to research how the rear end of a car works if you did not know what the purpose of a car or a drive train was? 2 wheel, 4 wheel, rear wheel, front wheel drive would not make much sense unless you knew that 2 wheel drive is cheaper to buy and uses less gas but and is good enough for most people but 4 wheel drive is more expensive but good for bad weather, snow,etc.
I was just asking for a good Internet link or specific book for the general subject of VOIP and a general description of what an SBC and ETS PBX is.
I received a very brief description of what an SBC does and a little scolding about being too lazy to do my own research.
Now I will go research pinholing and when an SBC is used.
Does Cisco VOIP need an SBC?
I will research pinholing but even after I understand what the definition of pinholing is will I know when to use it?
I have had discussions with people about this before about doing research. Yes cisco.com probably has 80% of everything that you will ever need to know but one lifetime is not enough to read every white paper, config guide, product literature, etc.. so sometimes I ask if the system can be generalized at a higher level and then when I research the component parts I will learn it more efficiently. Can you imagine going to research how the rear end of a car works if you did not know what the purpose of a car or a drive train was? 2 wheel, 4 wheel, rear wheel, front wheel drive would not make much sense unless you knew that 2 wheel drive is cheaper to buy and uses less gas but and is good enough for most people but 4 wheel drive is more expensive but good for bad weather, snow,etc.
I was just asking for a good Internet link or specific book for the general subject of VOIP and a general description of what an SBC and ETS PBX is.
I received a very brief description of what an SBC does and a little scolding about being too lazy to do my own research.
Now I will go research pinholing and when an SBC is used.
ASKER
after searching for pinholing and session border controller I found a decent link:
http://www.metaswitch.com/sbc-session-border-controller/what-is-sbc.aspx
http://www.metaswitch.com/sbc-session-border-controller/what-is-sbc.aspx
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