Analog signaling in a digital interface

Hi,

Since I'm used to work in the "data world", until now it was usual to configure E1s (cause I'm in Europe) with "channel-group" or "pri-group" on controllers. There was no secret, just framing, lincode, clocking and timeslots to use. After that, only L2 protocol needed to be specified on serial interface and all was ready to go.

Now, getting inside the voice world, the "pri-group" doesn't change, as CCS is still there, but here comes the "ds0-group", with analog (Analog!!??) signaling types associated. I really don't get how analog signaling is mixed with digital interfaces. Is somebody used to use this kind of configs?

Regards,

Comments

  • I wouldn't focus too much on ds0-groups and CAS, and instead focus on PRIs for T1 and E1, since they support all of the features that are needed for new CUCM 7.0.1 types of dialplans. 



    On Oct 23, 2010, at 6:58, JDS <[email protected]> wrote:

    Hi,

    Since I'm used to work in the "data world", until now it was usual to configure E1s (cause I'm in Europe) with "channel-group" or "pri-group" on controllers. There was no secret, just framing, lincode, clocking and timeslots to use. After that, only L2 protocol needed to be specified on serial interface and all was ready to go.

    Now, getting inside the voice world, the "pri-group" doesn't change, as CCS is still there, but here comes the "ds0-group", with analog (Analog!!??) signaling types associated. I really don't get how analog signaling is mixed with digital interfaces. Is somebody used to use this kind of configs?

    Regards,




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  • Hi Mark,

    Does it happen in the same way with QSIG, or other kinds of interconnection with PBX systems (like when E&M is used)?

    I find some questions in theory (you know, sample exams, Q&A, etc) but not many real world examples. In the same way, online labs have no fax infrastructure. It seems, in general, that some topics are nearly only part of the theory world and It makes me feel unconfortable, as I don't want to let them away in my road CCVP ---> CCIE.

    Thanks in advance for your help,
    Best Regards,
    Jordi.

    --- El mar, 26/10/10, Mark Snow <[email protected]> escribió:

    De: Mark Snow <[email protected]>
    Asunto: Re: [CCIE Voice] Analog signaling in a digital
    interface
    Para: [email protected]
    Fecha: martes, 26 de octubre, 2010 21:15

    I wouldn't focus too much on ds0-groups and CAS, and instead focus on PRIs for T1 and E1, since they support all of the features that are needed for new CUCM 7.0.1 types of dialplans. 



    On Oct 23, 2010, at 6:58, JDS <[email protected]> wrote:

    Hi,

    Since I'm used to work in the "data world", until now it was usual to configure E1s (cause I'm in Europe) with "channel-group" or "pri-group" on controllers. There was no secret, just framing, lincode, clocking and timeslots to use. After that, only L2 protocol needed to be specified on serial interface and all was ready to go.

    Now, getting inside the voice world, the "pri-group" doesn't change, as CCS is still there, but here comes the "ds0-group", with analog (Analog!!??) signaling types associated. I really don't get how analog signaling is mixed with digital interfaces. Is somebody used to use this kind of configs?

    Regards,




    Internetwork Expert - The Industry Leader in CCIE Preparation

    http://www.internetworkexpert.com



    Subscription information may be found at:

    http://www.ieoc.com/forums/ForumSubscriptions.aspx



    Internetwork Expert - The Industry Leader in CCIE Preparation

    http://www.internetworkexpert.com



    Subscription information may be found at:

    http://www.ieoc.com/forums/ForumSubscriptions.aspx
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