4 ms·

It's 2012, and there's still no official SIP to Skype gateway

10 points by xxqs 15y ago

Any idea why Skype does not provide any official means to call skype accounts from a SIP connection? Even a paid interface is not available. The only thing that is available is a paid service where you can call phone numbers from Skype to your SIP trunk so, there's a huge world of SIP telephony, and another huge world of Skype users. And they don't talk to each other. I'm not considering dirty hacks which bind Asterisk or FreeSWITCH with a Skype GUI client installed on the same machine.

blakdawg 15y ago
Who would make money if this existed? Who would lose money? I have a hard time articulating a concrete benefit for Microsoft that would result from a gateway.
- xxqs 15y ago
  as I mentioned in above comment, I already pay for skype-to-PSTN calls, and I wouldn't mind paying for SIP<=>Skype calls as well
wslh 15y ago
It is complex to fully reverse engineer Skype: http://en.wikipedia.org/wiki/Skype_protocol http://en.wikipedia.org/wiki/Skype_protocol
- xxqs 15y ago
  I'm actually talking about officially supported ways of communicating, not hacking
wmf 15y ago
The purpose of Skype is to have a monopoly on the namespace and interop threatens that. Realistically, don't most people use SIP with phones that can only dial numbers?
- xxqs 15y ago
  there's plenty of ways to assign a numeric alias to a SIP name. For example, I run a virtual PBX with my internal numbering plan. I could assign internal numbers to skype names, for example.
learntogoogle 15y ago
"Still no"? There was "Skype for Asterisk" for a long time, and unsurprisingly it's the first hit on Google. It was killed shortly after MS bought Skype. Life is hard when you buy into proprietary protocols.
- ComputerGuru 15y ago
  It was killed shortly after MS bought Skype, but it wasn't MS that killed it. A year+ before, Asterisk users received an email saying that the contract would not be renewed.
patrocles 15y ago
and no IPv6. granted, getting rid of NAT probably means Skype dies
- xxqs 15y ago
  I don't think so. They have an easy to use client, and a huge user base. I guess they will also add ipv6 support as soon there's enough ipv6 adoption on the residential market. I also don't have ipv6 at home from my cable provider, and they don't even tell when I can expect it.
iso8859-1 15y ago
Here's a link for the hack you mentioned: http://www.personal.psu.edu/wcs131/blogs/psuvoip/2011/12/skype_for_asterisk_the_hard_way.html http://www.personal.psu.edu/wcs131/blogs/psuvoip/2011/12/sky...
- xxqs 15y ago
  yes, and I'll never run it on my voip server :)
vollmarj 15y ago
So... Skype launched their official SIP service years ago. It is called Skype Connect. They wouldn't provide a gateway because that would cannibalize their low cost SIP trunking service. See http://www.skype.com/intl/en-us/business/skype-connect/ http://www.skype.com/intl/en-us/business/skype-connect/
- xxqs 15y ago
  this service does not allow to call a skype user from a SIP trunk. What they offer is just a regular SIP-to-PSTN service, plus a way for skype users to call into your SIP trunk. I am paying Skype for PSTN calls already. I wouldn't also mind paying them for SIP-to-Skype and Skype-to-SIP (with any public SIP destination) calls if there were such service.
tnuc 15y ago
>so, there's a huge world of SIP telephony, and another huge world of Skype users. And they don't talk to each other. They do talk to each other, users pay for the privilege. Think of it as a win/win for skype/sip providers. Just not a win for the users.
- xxqs 15y ago
  see my other comment below. I know about SkypeConnect, and it's only usable for particular types of businesses. the win/win for sype/sip providers is only when the calls go through PSTN beween them.
  - tnuc 15y ago
    >I know about SkypeConnect, and it's only usable for particular types of businesses. I didn't mention skype connect. >the win/win for sype/sip providers is only when the calls go through PSTN beween them. Do you really think the operators of skype or the sip providers cut the PSTN people in for anything when they don't have to? The only direct through pstn as a last resort. I have called peoples skype-in numbers from my skype account. I do get charged for this. I am certain it goes through no pstn network.
    - xxqs 15y ago
      could you be more specific? what exactly service did you talk about in the top comment?
      - tnuc 15y ago
        >what exactly service did you talk about in the top comment? Skype.
        xxqs 15y ago
        >They do talk to each other, users pay for the privilege. what exactly service are you talking about? what kind of communication, between which parties?
mcs 15y ago
There's an online service called Blue Jeans Network that lets you have a conference call with Skype, H.323, Google Talk, and Microsoft Lync participants. http://bluejeans.com/ http://bluejeans.com/
- xxqs 15y ago
  yes there are some services like this. I tried Comfytel about a month ago: http://txlab.wordpress.com/2012/01/30/comfytel-com-one-more-free-pstn-to-sip-gateway-provider/ http://txlab.wordpress.com/2012/01/30/comfytel-com-one-more-... the problem was, about 30% of calls didn't reach my skype client. I guess Comfytel uses one of those dirty hacks. Probably bluejeans too.
  - mcs 15y ago
    I used to work there, and they have a skypekit license. It doesn't use the "spawn a skype linux client and use the plugin interface" method, it's a direct integration.
    - xxqs 15y ago
      hmm, thanks. It's probably a quite expensive license, as the default developer agreement is quite restrictive: http://www.mail-archive.com/asterisk-dev@lists.digium.com/msg48959.html http://www.mail-archive.com/asterisk-dev@lists.digium.com/ms... any explanation why 30% of calls were dropped?

10 points by xxqs 15y ago

blakdawg 15y ago

Who would make money if this existed? Who would lose money? I have a hard time articulating a concrete benefit for Microsoft that would result from a gateway.

xxqs 15y ago
as I mentioned in above comment, I already pay for skype-to-PSTN calls, and I wouldn't mind paying for SIP<=>Skype calls as well

wslh 15y ago

It is complex to fully reverse engineer Skype: http://en.wikipedia.org/wiki/Skype_protocol http://en.wikipedia.org/wiki/Skype_protocol

xxqs 15y ago
I'm actually talking about officially supported ways of communicating, not hacking

wmf 15y ago

The purpose of Skype is to have a monopoly on the namespace and interop threatens that. Realistically, don't most people use SIP with phones that can only dial numbers?

xxqs 15y ago
there's plenty of ways to assign a numeric alias to a SIP name. For example, I run a virtual PBX with my internal numbering plan. I could assign internal numbers to skype names, for example.

learntogoogle 15y ago

"Still no"? There was "Skype for Asterisk" for a long time, and unsurprisingly it's the first hit on Google. It was killed shortly after MS bought Skype. Life is hard when you buy into proprietary protocols.

ComputerGuru 15y ago
It was killed shortly after MS bought Skype, but it wasn't MS that killed it. A year+ before, Asterisk users received an email saying that the contract would not be renewed.

patrocles 15y ago

and no IPv6. granted, getting rid of NAT probably means Skype dies

xxqs 15y ago
I don't think so. They have an easy to use client, and a huge user base. I guess they will also add ipv6 support as soon there's enough ipv6 adoption on the residential market. I also don't have ipv6 at home from my cable provider, and they don't even tell when I can expect it.

iso8859-1 15y ago

Here's a link for the hack you mentioned: http://www.personal.psu.edu/wcs131/blogs/psuvoip/2011/12/skype_for_asterisk_the_hard_way.html http://www.personal.psu.edu/wcs131/blogs/psuvoip/2011/12/sky...

xxqs 15y ago
yes, and I'll never run it on my voip server :)

vollmarj 15y ago

So... Skype launched their official SIP service years ago. It is called Skype Connect. They wouldn't provide a gateway because that would cannibalize their low cost SIP trunking service. See http://www.skype.com/intl/en-us/business/skype-connect/ http://www.skype.com/intl/en-us/business/skype-connect/

xxqs 15y ago
this service does not allow to call a skype user from a SIP trunk. What they offer is just a regular SIP-to-PSTN service, plus a way for skype users to call into your SIP trunk. I am paying Skype for PSTN calls already. I wouldn't also mind paying them for SIP-to-Skype and Skype-to-SIP (with any public SIP destination) calls if there were such service.

tnuc 15y ago

>so, there's a huge world of SIP telephony, and another huge world of Skype users. And they don't talk to each other. They do talk to each other, users pay for the privilege. Think of it as a win/win for skype/sip providers. Just not a win for the users.

xxqs 15y ago
see my other comment below. I know about SkypeConnect, and it's only usable for particular types of businesses. the win/win for sype/sip providers is only when the calls go through PSTN beween them.
- tnuc 15y ago
  >I know about SkypeConnect, and it's only usable for particular types of businesses. I didn't mention skype connect. >the win/win for sype/sip providers is only when the calls go through PSTN beween them. Do you really think the operators of skype or the sip providers cut the PSTN people in for anything when they don't have to? The only direct through pstn as a last resort. I have called peoples skype-in numbers from my skype account. I do get charged for this. I am certain it goes through no pstn network.
  - xxqs 15y ago
    could you be more specific? what exactly service did you talk about in the top comment?
    - tnuc 15y ago
      >what exactly service did you talk about in the top comment? Skype.
      - xxqs 15y ago
        >They do talk to each other, users pay for the privilege. what exactly service are you talking about? what kind of communication, between which parties?

mcs 15y ago

There's an online service called Blue Jeans Network that lets you have a conference call with Skype, H.323, Google Talk, and Microsoft Lync participants. http://bluejeans.com/ http://bluejeans.com/

xxqs 15y ago
yes there are some services like this. I tried Comfytel about a month ago: http://txlab.wordpress.com/2012/01/30/comfytel-com-one-more-free-pstn-to-sip-gateway-provider/ http://txlab.wordpress.com/2012/01/30/comfytel-com-one-more-... the problem was, about 30% of calls didn't reach my skype client. I guess Comfytel uses one of those dirty hacks. Probably bluejeans too.
- mcs 15y ago
  I used to work there, and they have a skypekit license. It doesn't use the "spawn a skype linux client and use the plugin interface" method, it's a direct integration.
  - xxqs 15y ago
    hmm, thanks. It's probably a quite expensive license, as the default developer agreement is quite restrictive: http://www.mail-archive.com/asterisk-dev@lists.digium.com/msg48959.html http://www.mail-archive.com/asterisk-dev@lists.digium.com/ms... any explanation why 30% of calls were dropped?