Frame-relay question

nice343nice343 Member Posts: 391
in CCNA & CCENT
In the real world what does the serial interface plugs into to establish a frame-relay connection? I know in a lb environment you would connect to a frame-relay switch but a in the real world, what would you connect it to.
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  • keenonkeenon Member Posts: 1,922 ■■■■□□□□□□
    you would connect it to a "smart jack" or the service providers demarc equipment that would facilitate your connection to a frame switch back at your local co

    this would use a RJ45 connector
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  • NetstudentNetstudent Member Posts: 1,693 ■■■□□□□□□□
    Most of the time, the demarcation equipment will be a CSU. Channel Service Unit..This basically prepares the the Frame to transmit onto a T1 circuit. A CSU can terminate more than one T1 as well. It has many uses depending on the intelligence of the device. Things like loopback testing and T1 keepalives.
    There is no place like 127.0.0.1 BUT 209.62.5.3 is my 127.0.0.1 away from 127.0.0.1!
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  • CiscopimpenatorCiscopimpenator Inactive Imported Users Posts: 134
    Real World Scenario

    Telco
    >CSU/DSU--->Router
    T1 line


    In small businesses usually the router plugs into a CSU/DSU via the serial cables.
    -Ciscopimpenator
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  • nice343nice343 Member Posts: 391
    Ciscopimpenator wrote:
    Real World Scenario

    Telco
    >CSU/DSU--->Router
    T1 line


    In small businesses usually the router plugs into a CSU/DSU via the serial cables.

    who will supply the csu/dscu. Is it the telco or you ?
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  • jvaxjvax Member Posts: 117
    nice343 wrote:
    who will supply the csu/dscu. Is it the telco or you ?
    If you don't have one, the Telco should supply one. You can rent one from them I think.
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  • nice343nice343 Member Posts: 391
    Can anyone show me a pic of a router plugged into a CSU/DSU which is also plugged into a leased line.

    thanks
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  • NetstudentNetstudent Member Posts: 1,693 ■■■□□□□□□□
    http://www.more.net/technical/netserv/routers/cisco1720/images/dsu-router-connection-w.jpg
    There is no place like 127.0.0.1 BUT 209.62.5.3 is my 127.0.0.1 away from 127.0.0.1!
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  • markzabmarkzab Member Posts: 619
    Net, you can use the image button when posting a link like that to get this... icon_wink.gif

    dsu-router-connection-w.jpg
    "You, me, or nobody is gonna hit as hard as life. But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward. How much you can take, and keep moving forward. That's how winning is done!" - Rocky
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  • nice343nice343 Member Posts: 391
    thanks guys icon_lol.gif

    one more question . The cable connecting to the router is a SERIAL MALE DTE V.35 right?
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  • Aquabat [banned]Aquabat [banned] Inactive Imported Users Posts: 299
    that's right, all serial ports are DTE buy default also
    i herd u leik mudkips lol
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  • kafifi13kafifi13 Member Posts: 259
    Mark that's great. At my work they are having me do a "telcom Word of the day" todays word was CSU/DSU and that's the same pic i used.
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  • markzabmarkzab Member Posts: 619
    kafifi13 wrote:
    Mark that's great. At my work they are having me do a "telcom Word of the day" todays word was CSU/DSU and that's the same pic i used.

    Actually the image was from the poster above me. I just enabled the image in the thread instead of the link. Can't take credit for someone elses work. icon_wink.gif
    "You, me, or nobody is gonna hit as hard as life. But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward. How much you can take, and keep moving forward. That's how winning is done!" - Rocky
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  • NetstudentNetstudent Member Posts: 1,693 ■■■□□□□□□□
    thanks Mark
    There is no place like 127.0.0.1 BUT 209.62.5.3 is my 127.0.0.1 away from 127.0.0.1!
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  • mobri09mobri09 Users Awaiting Email Confirmation Posts: 723
    oooo nice pic and explaination!
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  • nice343nice343 Member Posts: 391
    aynone has a pic of an ATM conenction?

    I know this is not covered but I want to see how an ATM looks like.
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  • NetstudentNetstudent Member Posts: 1,693 ■■■□□□□□□□
    fir97f27.jpg
    There is no place like 127.0.0.1 BUT 209.62.5.3 is my 127.0.0.1 away from 127.0.0.1!
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  • Paul BozPaul Boz Member Posts: 2,620 ■■■■■■■■□□
    I'll take a picture of a Nokia D50 DSLAM remote line card shelf for you on Monday, when I'm back at work. It's connected via ATM to the CBX aggregator. In fact, I'll take a few pictures of some other ISP grade fiber equipment if you want.
    CCNP | CCIP | CCDP | CCNA, CCDA
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  • nice343nice343 Member Posts: 391
    Paul Boz wrote:
    I'll take a picture of a Nokia D50 DSLAM remote line card shelf for you on Monday, when I'm back at work. It's connected via ATM to the CBX aggregator. In fact, I'll take a few pictures of some other ISP grade fiber equipment if you want.

    yes I want to see them
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  • lildeezullildeezul Member Posts: 404
    damn i never seen an ATM.

    that mother is huge. lol
    NHSCA National All-American Wrestler 135lb
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