Friday, April 22, 2005

SIP declared dead - a requiem 

After I already noted that the SIP developers have been seriously infected be the bellheads disease, SIP has finally been declared dead by Telepocalypse:

SIP is history as far as the future of voice is concerned. Get over it. The Vob is dead. Shuffled off to join the big pile of dead over-complex standards. DCE, CORBA — please make some space between you, we’ve got company tonight.

May I add B-ISDN, OSI (X.400), H.323, INAP, BICC,...

Aswath is holding the requiem with citing from the poem The Bull.

And he ends:
Pity him, this dupe of dream,
Leader of the herd again
Only in his daft old brain,
Once again the bull supreme
And bull enough to bear the part
Only in his tameless heart.
And it is being replaced by another young bull, the “iPod of VoIP”, Skype.

May I add the very sad last verse:
And the dreamer turns away
From his visionary herds
And his splendid yesterday,
Turns to meet the loathly birds
Flocking round him from the skies,
Waiting for the flesh that dies.
SIP (1995 - 2005) R.I.P

PS: Watch Out
There are still some zombies around, namely the living dead from 3GPP, ETSI TISPAN, ATIS, ... specifying currently SIP on steroids: the IP Multimedia System (IMS).

I am not sure whether I meant to write a requiem for SIP, but it was certainly to be an advice for the young bull. There was a time when H.323 was dumped because it was bellheaded; now it is SIP's turn to get the same label. The interesting thing to observe is that Skype apologists are suggesting that Skype will vanquish everything else. How more bellheaded can one be?

Those that think that Skype is set to take over the communications world lack perspective. VoIP isn't just about two people having a conversation using their PCs and the Internet. VoIP is about convergence of networks, ROI, cost savings and feature/service enhancements. SIP, like H.323, MGCP and other open standards based protocols, facilitates VoIP's promises. It enables much more than line side communication and messaging. SIP can enable call centers, call trunking and interoperability to systems such as voicemail and voice application systems. Skype does what it does very well. I use it. I like it. It's not about to replace SIP. Enough with the Skype hype.
SIP "promises" to faciliate all the nice things you talk about, but the only real open standards based implementations I saw up to now are similar, but inferior to Skype, or POTSoIP. All really nice things e.g call centers, or the MS RTC are also propriatory, see also

A user does not care if a network operator is using ISDN, SS7, H323, MGCP or SIP within is networks or to interoperate with other operators. Skype also uses SIP to interwork with operators.

The basic question is (and I have no answer to this yet), will the user decide to use a NETWORK operator to communicate (the 3GPP/IMS approach) or will he use a VIRTUAL operator approach independant of access and transport like Vonage, Skype, sipgate, fwd, etc.

The problem here with SIP is that ALL of the network operators and most of the virtual operators (e.g Vonage) do not provide you with an SIP URI reachable on the Internet.

You can only reach the users in the same network on the Internet, or the users you operator decides to peer with.

Since they do this on a bilateral basis to keep their termination charges alive, this is very restricted.

So what is the difference or advantage of Skype? Nothing, except it is already the biggest network, so Metcalfe's law applies.

The SIP providers missed this because of their greediness
Very nice work on your blog, It was fun to read! I am still not done reading everything, but I bookmarked you! I really like reading about call centers and even created a call centers blog of my own if you are interested!
Your blog is great! It's hard to find blogs with good content and people talking about call centers these days! I have a public call centers blog if you want to come leave me a comment or two! May I put a link to this blog of yours on mine?
I use VoIP (Skype and other programs) for long time. I haven't got any problems.

My friend is using VoIP (not by internet) and there was problems. Meaby this blog will help him. Good job.
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