[asterisk-biz] Anyone experienced in cable telephony?

[Alex Balashov]

C. Savinovich wrote:

> Thank you all for your replies.  But here is the dumb question: I have never
> seen how the coaxial cable used for cable TV ends up on a provider's rack.
> Can anybody describe me (as if I was looking at a picture) how a whole bunch
> of round coaxial cabling can come into a room and end up in an Asterisk PBX
> providing telephony... I suppose the coaxial cables just end up in routers
> with coaxial ports, and then, it is just a network like any other network...
> or isn't it?...is there anything I am not taking into consideration??

No coax goes into Asterisk.  Coax is just part of the network build-out 
on the last mile for delivering IP to the customer.  HFC is the 
technology that bridges Ethernet over to a head-end UBR or similar piece 
of broadband aggregation equipment over CATV and/or digital.

Imagine that you have an Asterisk PBX colocated somewhere and have a 
VoIP handset at home on your DSL connection.  The "DSL" part of the 
equation doesn't touch either your phone or the PBX per se;  it's just a 
piece of the abstraction layer and mesh of networks, administrative 
domains and physical-layer technologies that deliver IP from Asterisk to 
you.

Coax is the same way.

-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
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