[asterisk-biz] Anyone experienced in cable telephony?

[Alistair Cunningham]

In our experience, this will already be taken care of for you if you're 
installing a telephony system for an existing cable company, and their 
staff will already be very familiar with this because they're probably 
already offering internet service. In general there's some box or set of 
boxes that converts cable signals to ethernet and IP. Your new telephony 
boxes then just sit on the same subnet as all their other network 
servers such as DNS, web, etc, and talk pure SIP over IP to CPE devices. 
The server just lets the clients register from whatever IP addresses the 
cable system happens to give them.

Alistair Cunningham
+1 888 468 3111
+44 20 799 39 799
http://integrics.com/


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??
> 
> CS
> 
> 
> -----Original Message-----
> From: asterisk-biz-bounces at lists.digium.com
> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Steve Totaro
> Sent: Thursday, January 29, 2009 12:11 AM
> To: Commercial and Business-Oriented Asterisk Discussion
> Subject: Re: [asterisk-biz] Anyone experienced in cable telephony?
> 
> If in fact you are going to use IP as the transport, I think to offset
> some of the startup costs, I would offer customers an option to buy or
> upgrade to a router with FXS ports.  Call it "Digital Phone Service",
> not "VoIP Service".  Now you only have two pieces of equipment at the
> customer's location.
> 
> Also, don't "sell" the equipment, rent it for a small monthly fee.  My
> mother has three cable boxes that she uses even though she has cable
> ready TV and that has been going on for at least fifteen or twenty
> years.  She has been paying $5 a month for each box even though it is
> an extra part.
> 
> This will help tremendously in cutting support issues and costs as
> well, since the router/ATA is on a public IP (I assume) so no NAT on
> the customer's side for the ATA.
> 
> Thanks,
> Steve
> 
> On Wed, Jan 28, 2009 at 9:39 PM, C. Savinovich
> <c.savinovich at itntelecom.com> wrote:
>> Analog POTS?... don't think so because that would imply having to use
> dslams
>> (pardon me if I am wrong)... they already purchased the cable modems and
> lo
>> and behold, the cable modems don't have telephony ports.  Definitely the
>> medium is IP, where we can probably use 3 devices (one router, one cable
>> modem, and one ata).  The part where I am not too clear is on the provider
>> side, what equipment handles the partitioning, et al.
>>
>> CS
>>
>> -----Original Message-----
>> From: asterisk-biz-bounces at lists.digium.com
>> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Alex Balashov
>> Sent: Wednesday, January 28, 2009 8:49 PM
>> To: Commercial and Business-Oriented Asterisk Discussion
>> Subject: Re: [asterisk-biz] Anyone experienced in cable telephony?
>>
>> C. Savinovich wrote:
>>
>>> I have an opportunity to provide telephony to a small cable provider in a
>>> foreign country... about 500 subscribers.  Will anybody know what
>> equipment
>>> is necessary on the provider side to provide asterisk based telephony?
>> Any
>>> links or pointers where to find info will be appreciated.
>> That depends on what the intended medium and transport is.  Are they
>> looking to provide analog POTS (i.e. FXO ports broken out of RJ-11
>> jacks)?  Are they looking to get it to the customer as IP or use some
>> sort of voice-over-RF contraption like some cable MSOs in the US use in
>> certain parts?
>>
>> --
>> Alex Balashov
>> Evariste Systems
>> Web    : http://www.evaristesys.com/
>> Tel    : (+1) (678) 954-0670
>> Direct : (+1) (678) 954-0671
>> Mobile : (+1) (678) 237-1775
>>
> 
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