- This topic has 15 replies, 1 voice, and was last updated 18 years ago by jawahar gulyani.
17th April 2002 at 08:23 #21488Varchas Ramila SubrahmanyaGuest
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 #21489RommelGuest
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 #21490martinGuest
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 #21491HamidGuest
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 #21492BIpinGuest
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 terminal20th June 2002 at 11:25 #21493luscentGuest
how does ip telephoney work exactly20th June 2002 at 15:56 #21494BillyGuest
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 #21495RommelGuest
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 #21496MarshallGuest
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 #21497Varchas Ramila SubrahmanyaGuest
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 #21498Jose QuinteroGuest
IP TElephony is an applcationof VoIP
Regards16th July 2002 at 04:29 #21499Varchas Ramila SubrahmanyaGuest
Then what are the other applications of VoIP Jose?
Regards17th July 2002 at 14:21 #21500Jose QuinteroGuest
CTI Applicactions, Voice Portal, Web Call center, Click and Talk, Class IV replacement, Class V replecement, etc.
POrtal Web19th July 2002 at 15:12 #21501SureshGuest
CDR is Short of Call Detail Record used for Billing and tracking is that right Marshall26th July 2002 at 19:41 #21502omprakash dubeyGuest
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