Jump to content

What happens on a backhaul failure?


mirlyn
 Share

Recommended Posts

If its microwave backhaul and on a spur network, then it should be able to go to a different source. If it backhauled by fibre/aav then it's probably down until the connection is restored.

Link to comment
Share on other sites

I was in an area today and I noticed I was only roaming. I could throw a rock and hit the tower. The tower had vzw and att on it as well. Roaming coverage worked just fine. Maybe vzw had backhaul via one of the radomes on the tower and the land line stuff was down. No telling, and I could see the flashing lights on the tower. Power was not out in the area. I could see the house next to it had power.

 

But no Sprint coverage. No trucks at the tower. I assume that when backhaul goes down it shuts off the signal or at least your phone will not handshake with the network and attempts to search for a native signal or roaming one.

 

Sent from my C64 w/Epyx FastLoad cartridge

  • Like 1
Link to comment
Share on other sites

When a fiber cut severed Windstream and Verizon (ILEC) from the outside world a couple years ago in central TX, everyone who had ILEC backhaul (nearly all cell providers, depending on the area) stopped broadcasting a usable signal. Everyone's phones said "no service" even though, other than the fiber cut, everything was fine network-wise. Time Warner Cable has their own fiber into the area so they weren't affected (nor was AT&T 3G in Kerrville from what I heard) but apparently TWC hadn't done any AAV contracts with cellular carriers in the area at that point, so everything just went offline for eight-plus hours.

Link to comment
Share on other sites

I remember one day at work my T1 went down. Fractional at that. We had dial backup too. Went up to the front and all phones were dead too. Dead in the water. Everybody in the building used ATT except for me. The ATT tower next to us shutdown as well. All phones went to no signal unless they went outside.

 

I later found out that someone dug up something like a 900 pair cable. They were down forever it seemed. I had to sneakernet our data to another building. I couldn't imagine making that many splices. You have to splice it twice once you cut out the mess. 3600 splices.. Fun times.

 

We were located next to the airport and they were down as well. And the prison next door too. Hahahah... Only in Louisiana.

 

Sent from my C64 w/Epyx FastLoad cartridge

Link to comment
Share on other sites

Trying to bend a 50 pair direct burial copper cable to splice is hard enough... I can only imagine how thick and hard to manage a cable like that would be...

 

Sent from my EVO LTE

Link to comment
Share on other sites

"No electricity was going though any of those cables"

 

I guess they were kind of right...

 

I wish I knew why our voice circuits go down sometimes. Usually how it goes with at&t is this:

 

At&t - "Sorry for your outage last night with one of your PRIs , I created a ticket (ticket number)

 

Me - "Thanks, please don't do any intrusive testing until tonight ."

 

At&t - OK. I will note that in the ticket.

 

10 minutes later one at a time all our PRIs go out of service for testing.

 

Sigh....

 

Back somewhat on topic, are there different circuits for voice and data at a cell tower?

 

 

 

Sent from my EVO LTE

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • large.unreadcontent.png.6ef00db54e758d06

  • gallery_1_23_9202.png

  • Posts

    • Confirmed on my way to work this morning and while out on lunch that the only Sprint sites I connected to were keep sites. All others seem to now be offline at least around Louisville and Shepherdsville KY. 
    • It is pretty easy to use, once you get the hang of it. For example, to select a specific LTE Band(s) Click on [7] --Clear selected bands Click on [5] LTE Band Preferences Click on the specific band(s) you want to enable.  Click on [F] Go Main Click on [9] --Apply band configuration The same holds for NR5G, just you would click on [5] NR5G Band preferences instead of [5] LTE Band Preferences To re-enable all bands: Click on [8] --Select all bands Click on [9] --Apply band configuration  
    • Got the Android 12 based upgrade today with May 2022 security.  They now have favorites in contacts. Have not yet figured out how to get rid of the google/T-Mobile screen. Wall paper changes.
    • 25/26 are still on here, though the site historically nearest me has been decom'd. I did have to cycle to B26 and then B25 to get my phone to lock on, as going directly to B25 landed me on AT&T MFBI. Will be interesting to see how long 25/26 stay on; it's hard to connect to Sprint B41 here as there's plenty of T-Mobile B41 on n41 sites.
    • Looks like the remaining Sprint network might be dead here now. Forcing my phone to B25 or B26 gives me no network, sad day for sure. 
  • Recently Browsing

    • No registered users viewing this page.
×
×
  • Create New...