Comments on: Skype and ENUM http://mrblog.org/2005/04/24/skype-and-enum/ Mr Blog. Very technical, or silly, sometimes absurd. Sat, 31 Jul 2010 23:49:50 -0700 http://wordpress.org/?v=abc hourly 1 By: Phil Wolff http://mrblog.org/2005/04/24/skype-and-enum/comment-page-1/#comment-460 Phil Wolff Mon, 02 May 2005 08:56:59 +0000 http://mrblog.televolution.net/?p=193#comment-460 There's a skype api, so i suspect niklas is cool with variations on callto:. btw, callto preceded skype; it was used by other systems first. There’s a skype api, so i suspect niklas is cool with variations on callto:. btw, callto preceded skype; it was used by other systems first.

]]> By: MrBlog http://mrblog.org/2005/04/24/skype-and-enum/comment-page-1/#comment-459 MrBlog Sun, 24 Apr 2005 18:05:36 +0000 http://mrblog.televolution.net/?p=193#comment-459 Hi Richard,<br /> <br /> Yep. I agree.<br /> <br /> My understanding is that (so far) Skype has taken the position that interop, and specifically SIP gateways, offer no value to Skype. Unless there are a lot of users on SIP, that are also using ENUM and have pure IP interop, Skype will see no pressure to interop with SIP. And their closed system makes deployment of a gateway by third parties challenging. So it doesn't look like we'll see SIP to Skype or Skype to SIP gateways any tme soon, if ever.<br /> <br /> SIP is reminding me of UNIX in the early days, where vendors all did things their own ways and there was very little network effect. SIP is happenign the same way. Very few services offer direct IP-based interconnect, especially at the phone number level, dialing ordinary numbers (who wants to hit a "*xxx select code" for every call). In fact, is there *any* ENUM-based phone number SIP IP peering between providers today? Hi Richard,

Yep. I agree.

My understanding is that (so far) Skype has taken the position that interop, and specifically SIP gateways, offer no value to Skype. Unless there are a lot of users on SIP, that are also using ENUM and have pure IP interop, Skype will see no pressure to interop with SIP. And their closed system makes deployment of a gateway by third parties challenging. So it doesn’t look like we’ll see SIP to Skype or Skype to SIP gateways any tme soon, if ever.

SIP is reminding me of UNIX in the early days, where vendors all did things their own ways and there was very little network effect. SIP is happenign the same way. Very few services offer direct IP-based interconnect, especially at the phone number level, dialing ordinary numbers (who wants to hit a "*xxx select code" for every call). In fact, is there *any* ENUM-based phone number SIP IP peering between providers today?

]]> By: Richard http://mrblog.org/2005/04/24/skype-and-enum/comment-page-1/#comment-458 Richard Sun, 24 Apr 2005 17:57:07 +0000 http://mrblog.televolution.net/?p=193#comment-458 Hi David,<br /> 1. it works on the Mac too ;-)<br /> 2.It is true that your average brand VOIP phone cannot use it, but these also cannot use ENUM either (beside the SNOM or the IX66). These VoIP phones require the ENUM query to be done by the SIP server and here a SIP-Skype gateway is needed, not out of imagination ;-)<br /> 3. This is not really a "hack", it is experimental and according to RFC 3761 ;-)<br /> 4. Why not call directly on skype? Why not use the SIP URI for calling a SIP user? Same reason. In addition, if you enter a phone number and the called party is also on Skype, you get a short-cut ;-) We will see how bellheadish Niklas will be on this by-pass to Skype-Out ;-)<br /> 5. One additional idea is of course to HAVE SIP-Skype gateways, especially for the PSTN-SIP-ENUM gateways. Hi David,
1. it works on the Mac too ;-)
2.It is true that your average brand VOIP phone cannot use it, but these also cannot use ENUM either (beside the SNOM or the IX66). These VoIP phones require the ENUM query to be done by the SIP server and here a SIP-Skype gateway is needed, not out of imagination ;-)
3. This is not really a "hack", it is experimental and according to RFC 3761 ;-)
4. Why not call directly on skype? Why not use the SIP URI for calling a SIP user? Same reason. In addition, if you enter a phone number and the called party is also on Skype, you get a short-cut ;-) We will see how bellheadish Niklas will be on this by-pass to Skype-Out ;-)
5. One additional idea is of course to HAVE SIP-Skype gateways, especially for the PSTN-SIP-ENUM gateways.

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