TDM data analyzer

Alex Balashov abalashov at
Tue Sep 22 12:01:08 UTC 2009

jp at wrote:

> Hello fellow NANOGers. Slightly offtopic, but I would greatly appreciate
> your suggestions. For my telecommunications engineering degree I am
> designing a TDM data analyzer, and I need suggestion, what you would 
> like in
> an appliance like that.
> Right now my idea is that it should be a transparent device that plugs in
> between two E1/T1/J1 devices and then connect to FastEthernet for data
> uplink. All data traveling between two devices is sent to central server
> that can accept data from one or more capture devices.
> End user (i.e. NANOGer debugging a problem) has a program to connect to 
> data
> acquisition server and can see decoded Q921/Q931 signaling data and to
> play-out what's happening in any one of voice channels. BERT tester and
> signal level indication with remote fault monitoring and logging would be
> included also. End user will have ability to record voice data with
> supplemental information too.
> So my question to the community is what other features you would like to 
> see
> in a device? And most of all - if you had a device like that would you find
> it useful?
> All replies off list greatly appreciated.  I would like to ask people to
> forward this email to colleagues that work with voice systems or to a voice
> operators group if you are a member of one.

Well, what do you presume to be entailed in "TDM?"  ISDN is not 
necessarily implied.  You could analyse E&M wink on D4 superframe.  ;) 
Much simpler.

Alex Balashov - Principal
Evariste Systems
Web     :
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671

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