Need help (please!) with CHP

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SCPD

QRT
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We have had multiple cases of the phone and 911 system failures in the past. Often times it is just the 911 system, which occurs when the fiber optic lines that originate in Victorville are cut by someone along the line between there and southern Inyo County. The phone lines here are closer to working to full capacity than in other areas of the state. On busy weekends in Mammoth (35,000 visitors in a town of 8,500) we can lose long distance. If it gets worse we can sometimes have difficulty making local calls and we have even had times when we don't get a dial tone. This happens because Mono County is at the end of the phone lines. The utilities in Mono County do not connect to the north toward Carson City. Phone and electricity lines end at the junction of State 108 and 395. The town of Walker, in the Antelope Valley (as opposed to more famous Antelope Valleys) is served by utilities from Nevada. There are no parallel lines for rerouting traffic to allow bypassing failures or isolating a trouble spot from others.

This near capacity situation is best illustrated by the Internet situation in Mammoth. It has been about 10 years since new Internet accounts have been available. It is like trying to buy a season ticket for the Green Bay Packers. A little additional capacity was provided when one fiber optic line was installed between Bishop and Mammoth about 8 years ago but it was immediately soaked up by the increased business use..

Two government agencies are the exception to the above. The state's microwave system is one. There is a site in Nevada that links Conway Summit in Mono County to a site near the California boundary in Alpine County. From there it links into sites near Tahoe and connects to the rest of the system. The eastern Sierra is on a state microwave loop rather than a dead end. The state's green phone likely links on this path as well as through the south end of the loop.

The other agency is the U.S. Forest Service, Toiyabe National Forest microwave linked radio system. When it was installed in the late 80's enough capacity was built to allow for about 18 phone circuits for voice and data that dumps into the commercial system in Reno, Nevada. About 8 or 10 of those were given to the county enabling the county seat to communicate. There is some sort of Congressional policy or law that prohibits this, even though it would save the feds a huge sum of money, but in this case with no alternative it was allowed. When I worked on the Toiyabe our phone bill from Bridgeport was greatly reduced because we could hit a button on our phones and get a Reno dial tone and Reno was the largest chunk of our long distance costs.

Private phone companies can't justify the investment to connect to the north as the small customer base will not provide a sufficient return. I'm not sure if there are any T-1 lines north of Bishop. This will change in the upcoming months as the federal government has stepped in with an economic recovery project that will connect Victorville, California to Carson City, Nevada with a high capacity fiber optic line. The project is called "Internet 395" as it follows the highway of the same number.

This situation and the outages have occurred during non-disaster times, imagine the problem if a disaster struck. I'm glad that the various agencies have built systems that don't depend on private infrastructure, even with the new line expected to become operational at the end of 2013. Redundancy is a good thing in disaster preparedness.
 
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scottyhetzel

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Awesome info. Smokey...what is a green line ? Also are you getting Verizon fios up there for data ? I love 4G cellular with 25 meg speed. Hopefully you got something decent ...But you are correct on the fact regarding return on investment. Small cities just don't get the infrastructure.

I know the dispatches center are connected via T-1 lines with towers as radio for back up. The magazine " wired" had a great article a couple years ago on how the Internet crosses America and across the seas.
 

SCPD

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Awesome info. Smokey...what is a green line ? Also are you getting Verizon fios up there for data ? I love 4G cellular with 25 meg speed. Hopefully you got something decent ...But you are correct on the fact regarding return on investment. Small cities just don't get the infrastructure.

I know the dispatches center are connected via T-1 lines with towers as radio for back up. The magazine " wired" had a great article a couple years ago on how the Internet crosses America and across the seas.

The green line is a State of California telephone circuit that uses the state's microwave backbone. When I've been in state offices, which has been 3-4 years, I saw a list of green line phone numbers hanging on a wall above a person's desk.

We don't have Verizon fios in the eastern Sierra as there isn't sufficient bandwidth to carry TV signals. We don't really have enough bandwidth to serve the existing customers with phone and DSL. We pay for 10 Mb/second and we only get about 6. If we lowered our service to 6 we would only get 3. It is a rip off, but if you give up the 10 right now, you can't return to it again, that is until Internet 395 is completed.

Are you saying that CHP dispatch centers are connected via a T-1 line? I'm not sure if one exists north of Bishop. That would mean that the Mono County 911 center doesn't have it. This would not surprise me.

Everything I've written about on this thread may seem a bit off topic, but it illustrates why the state's microwave system is so important, especially in rural areas.
 

scottyhetzel

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Thanks for the green line clarification smokey.

When I worked For GTE we had dedicated business circuits a.k.a. t-1 lines that have 36 channels to dispatch centers.We usually had fail safe circuits at the ready. Most cellular towers are wired this way. If a t-1 line loses dial tone voltage(48vdc) the tower will report it to techs. Also techs are always monitoring all towers for functionality. These days officers have cell phones for back up of dispatch or radio fails...

Trivia: Most people don't realize that their caller I.d. Is un-blocked when you call any dispatch center via 911 or non-emergent business line....even though they ask you for your number.
 

gmclam

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Most people don't realize that their caller I.d. Is un-blocked when you call any dispatch center via 911 or non-emergent business line....even though they ask you for your number.
The consumer CallerID system is separate from what other systems use such as 911, billing, etc. And most people don't know it is also unblocked when they call a toll free number such as an 800 number.
 

oracavon

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Most people don't realize that their caller I.d. Is un-blocked when you call any dispatch center via 911 or non-emergent business line....even though they ask you for your number.

In the dispatch/call centers I worked in over the years, we didn't get any blocked caller ID info on the business lines. We got the info only on the 911 lines. I suppose that things may have changed since then.
 

SCPD

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Harry, the real name is Digital 395 Middle Mile according to my google search...(CBC California Broadband Cooperative | Digital 395 Middle Mile Project)

Right you are, even though my name is not Harry! I had forgotten the name when writing my post even though the status of the project is in the paper nearly every week. The project loses funding as of 10/1/13 so the fast pace of line installation continues. The company that took this on has busted butt to be at a point where finishing by the deadline is likely. We all look forward to the increased speed, especially when the town is full of visitors.
 

RadioGuy1951

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We all look forward to the increased speed, especially when the town is full of visitors.


Like during Mule Days...???

What is the radio traffic like, are additional freqs used...???

I remember the only 2m ham repeater I could use was actually able to hit part of NV as well...(it came in handy after blowing the tranny in the van east of Big Pine)...
 

SCPD

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Mule Days is in Bishop and the problem with bandwidth is north of there.

I've lived here for 32 years and believe it or not I've never attended Mule Days. I listen to all the agencies repeaters, but don't know if any special tacticals are used. I would imagine some traffic on CLEMARS is possible, however, since everyone except the CHP and Caltrans uses VHF-High Bishop PD's tactical is probably used also.

I used horses and mules on the job, attended a couple of rodeos and am not particularly attracted to a livestock show and events. It is usually pretty hot in Bishop during Mule Days so my wife and I prefer to stay up the hill where it is cool. The plan is to move to Bishop in a few years so maybe I will attend the event then.

The event is very important to the eastern Sierra, especially for Bishop. The event has fallen on some hard times financially and I hope it will continue for a few decades. A lot of mule owners have not been able to afford the trip. As things continue to recover, at least for some people, everyone hopes it will pick up again.
 
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