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Difference between IP Telephony and VoIP

Viewing 15 posts - 1 through 15 (of 16 total)
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  • 17th April 2002 at 08:23 #21488
    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.

    17th April 2002 at 16:58 #21489
    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.

    17th April 2002 at 23:29 #21490
    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.

    18th April 2002 at 20:48 #21491
    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.

    19th April 2002 at 12:06 #21492
    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

    20th June 2002 at 11:25 #21493
    luscent
    Guest

    how does ip telephoney work exactly

    20th June 2002 at 15:56 #21494
    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.

    27th June 2002 at 09:59 #21495
    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.

    10th July 2002 at 20:28 #21496
    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.

    13th July 2002 at 07:50 #21497
    Varchas Ramila Subrahmanya
    Guest

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

    15th July 2002 at 23:22 #21498
    Jose Quintero
    Guest

    It´s simple

    IP TElephony is an applcationof VoIP

    Regards

    16th July 2002 at 04:29 #21499
    Varchas Ramila Subrahmanya
    Guest

    Then what are the other applications of VoIP Jose?
    Regards

    17th July 2002 at 14:21 #21500
    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

    19th July 2002 at 15:12 #21501
    Suresh
    Guest

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

    26th July 2002 at 19:41 #21502
    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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