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Difference between IP Telephony and VoIP

  • This topic has 15 replies, 1 voice, and was last updated 18 years ago by jawahar gulyani.
Viewing 15 posts - 1 through 15 (of 16 total)
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  • #21488 Reply
    Varchas Ramila Subrahmanya
    Guest

    Could anyone tell me what’s the difference between IP telephony and VoIP. Are they synonymous? I feel that IP telephony is a smaller subset of VoIP dealing with the inter-operability of IP and PSTN. Please do correct me if I am wrong.

    #21489 Reply
    Rommel
    Guest

    IP Telephony is a marketing term, VoIP is a like term dealing with the type of technology.

    IP Telephony has come to mean various things.

    It started out as IP Phone based deployments, and has come to mean VoIP.

    VoIP is always what it has been, voice over IP.

    To answer you question, Yes, kinda synonymous depending who you talk to.

    #21490 Reply
    martin
    Guest

    it’s a moot point rather like the ‘softswitch’ term. I have always interpreted ‘IP telephony’ as being pure IP from handset to handset, as rommel says, whereas VoIP involves the use of gateway devices to convert digital/analog voice to IP packets.

    However I agree that the terms have become interchangeable, maybe erroneously.

    #21491 Reply
    Hamid
    Guest

    VoIP and IP Telephoney are used interchangeably.

    Its basically, Voice over RTP over UDP over IP over Layer2.
    Now the question is that what will be your Layer2. Is it ATM, FR, X.25, etc.

    #21492 Reply
    BIpin
    Guest

    One very basic difference – In VoIP, the user is oblivious of the fact that his voie is actually being carried over IP. Hence the POTS telephone instrument at his/her house remains the same, where as the difference is only at the back end, while in IP telephony u communicate through your COmputer of any other H323 terminal

    #21493 Reply
    luscent
    Guest

    how does ip telephoney work exactly

    #21494 Reply
    Billy
    Guest

    I tend to refer to VoIP as the transport and IP telephony dealing with the technologies providing end services, such as handsets, softphones, VXML applications, etc.

    #21495 Reply
    Rommel
    Guest

    The ITU has defined IP Telephony and VoIP as interchangable. I am not saying they are right, but in that standards organization it is the accepted meaning.

    #21496 Reply
    Marshall
    Guest

    IP Telephony is becoming a Superset of VoIP. VoIP is more specific of voice transport. IP Telephony is broader and includes CTI applications. Sending the CDR over IP is an IP Telephony application but it is not VoIP.

    Marketing types are bending the rules.

    #21497 Reply
    Varchas Ramila Subrahmanya
    Guest

    Marshall: I did not understand what sending cdr over IP means? What is CDR?Sorry for this dumb question…

    #21498 Reply
    Jose Quintero
    Guest

    It´s simple

    IP TElephony is an applcationof VoIP

    Regards

    #21499 Reply
    Varchas Ramila Subrahmanya
    Guest

    Then what are the other applications of VoIP Jose?
    Regards

    #21500 Reply
    Jose Quintero
    Guest

    Varchas,

    Here some:

    CTI Applicactions, Voice Portal, Web Call center, Click and Talk, Class IV replacement, Class V replecement, etc.

    POrtal Web

    #21501 Reply
    Suresh
    Guest

    CDR is Short of Call Detail Record used for Billing and tracking is that right Marshall

    #21502 Reply
    omprakash dubey
    Guest

    see. Ip telephone is Diff. VOIP is diff its all depend upon tech.which
    you are using.in VOIP only simple
    phone we can use. but in IPtele.we
    use VIOP+IPphone.

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