[BC] IP STL

[Mike McCarthy]

With HD2 et al coming,  One T-1 will not be enough unless we can pre-code 
the whole thing at the studio and ship it out as one pre-packaged data stream.

I'm looking to find a loophole in Part 90 and Part 101 which will allow 
licensable multi-T-1 microwave links to operate as the final hop....which 
there are specific rules prohibiting such for program audio. We have 18 Ghz 
in Part 74...  But for more than a few miles, weather fade plays a GREAT 
role in it's reliability.  Snow, rain, and fog will kill a longer link.

Stay tuned...

As for the reliability, T-1's will vary by both the distance of the circuit 
AND the distance on each end to the CO.  Once we fixed the cable at the 
studio (where we had weekly faults of some sort across all of our T-1's), 
all but a couple fault events have been at the transmitter end.  Of course, 
all have some distance to the serving CO.

I agree with Robert that you need diversity and a non-Bell means to convey 
program audio to the TX for the reasons he cites, plus back-hoe fade, mice, 
tractors hitting pedestals, accidents, etc. On our more important sites, 
non-landline means are increasingly important.

MM

At 09:33 PM 2/18/2006 -0500, Robert Meuser wrote
>I got the impression this was on the REALLY cheap.
>
>Me I would use a point to point T1 AND a digital STL AND spread spectrum 
>backup.  But that DOES cost more.
>
>R
>
>Chris Gebhardt wrote:
>>Robert Meuser wrote:
>>
>>>I have had good experiences with the audio TX communicator. $700 per end 
>>>for software that will run on a pretty modest computer, like a 600 mhz 
>>>pentium. I has the ability to operate with linear as well as mpeg audio. 
>>>The software adjusts its buffering automatically based on network 
>>>condition and can also function via ISDN.
>>>
>>>We even ran it off a laptop in the middle of Manhattan via plain vanella 
>>>WIFI and it worked quite well.
>>>
>>>If you could get DSL lines with enough uplink speed, you could run 
>>>linear audio and the network traffic would not likely be an issue if 
>>>both DSL were from the same telco provider.
>>
>>DSL might work out well, but for a critical application like STL, I would 
>>suggest T1 due to its more bullet-proof nature, wide availablity, 
>>guaranteed transfer rates and superior SLA to protect you.
>>Since we (as well as other providers) are able to sell T1 for under 
>>$300/month depending on location, it's really not that expensive a 
>>venture.  Esp. not for the benefits.
>>Chris Gebhardt
>>VIRTBIZ Internet Services
>>chris at virtbiz.com | (866) 4-VIRTBIZ
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