Comments on: What’s Up with Shared Line Appearance and Polycom Phones? http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones Everything you need to know about VoIP Fri, 18 May 2012 11:50:55 -0400 http://wordpress.org/?v=2.8 hourly 1 By: Alex Debian http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-64262 Alex Debian Tue, 20 Apr 2010 14:51:36 +0000 http://blog.voipsupply.com/?p=1732#comment-64262 Do you know if will be any improvements for SLA on asterisk 1.8 ?? Do you know if will be any improvements for SLA on asterisk 1.8 ??

]]> By: Martin Sunstrum http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-62692 Martin Sunstrum Thu, 14 Jan 2010 20:42:56 +0000 http://blog.voipsupply.com/?p=1732#comment-62692 If anyone is interested in seeing some great advancements being made in Shared Line Appearance (SLA) and general Key Telephone System (KTS) behavior with Asterisk, and happen to be attending the upcoming IT Expo in Miami, be sure to check out the following presentation. http://www.tmcnet.com/voip/conference/digium-asterisk-world/daw-e10-presentation-theatre.htm Topic: Asterisk as a Key Telephone System (KTS) … is there any hope ? Date: Thursday, January 20, 2010, 2PM Location: IT Expo East 2010, Miami Beach, FL Where: Digium Asterisk World Presentation Theatre If anyone is interested in seeing some great advancements being made in Shared Line Appearance (SLA) and general Key Telephone System (KTS) behavior with Asterisk, and happen to be attending the upcoming IT Expo in Miami, be sure to check out the following presentation.

http://www.tmcnet.com/voip/conference/digium-asterisk-world/daw-e10-presentation-theatre.htm

Topic: Asterisk as a Key Telephone System (KTS) … is there any hope ?

Date: Thursday, January 20, 2010, 2PM
Location: IT Expo East 2010, Miami Beach, FL
Where: Digium Asterisk World Presentation Theatre

]]> By: Martin Sunstrum http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-62682 Martin Sunstrum Thu, 14 Jan 2010 20:41:11 +0000 http://blog.voipsupply.com/?p=1732#comment-62682 Best reference site I found on this issue of SLA and general KTS operation is at http://www.smartvox.co.uk/astfaq_asterisk_sla.htm Very well written, and full credit to John Quick at Smartvox Limited in the UK for a very thorough and well written explanation of the various issues. Best reference site I found on this issue of SLA and general KTS operation is at http://www.smartvox.co.uk/astfaq_asterisk_sla.htm

Very well written, and full credit to John Quick at Smartvox Limited in the UK for a very thorough and well written explanation of the various issues.

]]> By: Michael Collins http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-62672 Michael Collins Tue, 12 Jan 2010 01:47:51 +0000 http://blog.voipsupply.com/?p=1732#comment-62672 FYI, FreeSWITCH just added support for the Broadsoft SCA method of handling shared lines. Announcement is here: http://www.freeswitch.org/node/227 Like the others have said, SLA is a complex feature and getting it to work with multiple phone vendors is a real feat of software engineering. Kudos to the FreeSWITCH guys. -MC FYI,

FreeSWITCH just added support for the Broadsoft SCA method of handling shared lines. Announcement is here: http://www.freeswitch.org/node/227

Like the others have said, SLA is a complex feature and getting it to work with multiple phone vendors is a real feat of software engineering. Kudos to the FreeSWITCH guys.

-MC

]]> By: Anthony Minessale http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-62622 Anthony Minessale Thu, 07 Jan 2010 19:40:13 +0000 http://blog.voipsupply.com/?p=1732#comment-62622 We managed to get SLA working on FreeSWITCH with the help of a patch from Matthew Kaufman. We finished what he started and can get it working using the Sylantro method on polycom. Now we added support for it on cisco/snom/aastra by using the broadsoft method. Polycom claims to support this method in several documents but it does not seem to work whatsoever. So either they are lying or it's broken or there is another secret config option we can't find. We managed to get SLA working on FreeSWITCH with the help of a patch from
Matthew Kaufman. We finished what he started and can get it working using the Sylantro method on polycom. Now we added support for it on cisco/snom/aastra by using the broadsoft method. Polycom claims to support this method in several documents but it does not seem to work whatsoever. So either they are lying or it’s broken or there is another secret config option we can’t find.

]]> By: Chadwick http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-29702 Chadwick Mon, 02 Mar 2009 19:20:53 +0000 http://blog.voipsupply.com/?p=1732#comment-29702 Just an FYI SLA is a server side feature, meaning the phone is told what to do and is updated by the server. Each phone updates the server individually and the server is responsible for updating the phones. The phones don't keep track of each other, how could they? They would have to keep track of all the registrations and bindings as well. It is not as easy as turning on a switch. I guess the trick is knowing that SLA/BLA requires server side interop and is a very complex feature. Just an FYI SLA is a server side feature, meaning the phone is told what to do and is updated by the server. Each phone updates the server individually and the server is responsible for updating the phones. The phones don’t keep track of each other, how could they? They would have to keep track of all the registrations and bindings as well. It is not as easy as turning on a switch.

I guess the trick is knowing that SLA/BLA requires server side interop and is a very complex feature.

]]> By: dennis http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-27952 dennis Tue, 03 Feb 2009 01:58:27 +0000 http://blog.voipsupply.com/?p=1732#comment-27952 I've got switchvox smb, two polycom IP330 and a linksys spa962. I have exactly the same experience as you with trying to get SLA working on the polycoms. If I buy a second spa962, will i be able to get one extension appear on both spa962 by just configuring the spa962's through the spa962 gui? I'm at the end of my rope on this one...very frustrated. Thanks! I’ve got switchvox smb, two polycom IP330 and a linksys spa962. I have exactly the same experience as you with trying to get SLA working on the polycoms. If I buy a second spa962, will i be able to get one extension appear on both spa962 by just configuring the spa962’s through the spa962 gui?

I’m at the end of my rope on this one…very frustrated.

Thanks!

]]> By: Matthew Kaufman http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-27542 Matthew Kaufman Tue, 27 Jan 2009 03:13:11 +0000 http://blog.voipsupply.com/?p=1732#comment-27542 There's several different ways of supporting SLA/BLA, none of them a real standard (eg., Broadsoft's call-info/line-seize event approach, the draft-anil-sipping-bla approach with dialog;sla, the Linksys notify dialog without subscription approach). Polycom phones do one of the first two, depending how they're configured. I've been working on adding support for draft-anil-sipping-bla-style SLA/BLA to FreeSWITCH for the last couple of weeks and have some prototype code working. But you're right, unless you're using the SPA9000 and Linksys phones or you're using Broadsoft or Sylantro with phones that support that (including Polycom), you're not going to have much luck getting the behavior you want. (And the behavior Asterisk provides for SLA is far from that) There’s several different ways of supporting SLA/BLA, none of them a real standard (eg., Broadsoft’s call-info/line-seize event approach, the draft-anil-sipping-bla approach with dialog;sla, the Linksys notify dialog without subscription approach). Polycom phones do one of the first two, depending how they’re configured.

I’ve been working on adding support for draft-anil-sipping-bla-style SLA/BLA to FreeSWITCH for the last couple of weeks and have some prototype code working.

But you’re right, unless you’re using the SPA9000 and Linksys phones or you’re using Broadsoft or Sylantro with phones that support that (including Polycom), you’re not going to have much luck getting the behavior you want.

(And the behavior Asterisk provides for SLA is far from that)

]]> By: Andreas vandem Helge http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-26332 Andreas vandem Helge Fri, 09 Jan 2009 03:20:20 +0000 http://blog.voipsupply.com/?p=1732#comment-26332 RE: Rory's comment... yes Asterisk does "support" SLA (see sla.conf file for details) but IMO it is a horrible implementation. In my testing it did not even pass callerid data. Maybe for sharing analog lines it could work "ok." RE: Rory’s comment… yes Asterisk does “support” SLA (see sla.conf file for details) but IMO it is a horrible implementation. In my testing it did not even pass callerid data. Maybe for sharing analog lines it could work “ok.”

]]> By: Andreas vandem Helge http://www.voipsupply.com/blog/whats-up-with-shared-line-appearance-and-polycom-phones/comment-page-1#comment-26322 Andreas vandem Helge Fri, 09 Jan 2009 03:19:04 +0000 http://blog.voipsupply.com/?p=1732#comment-26322 Further information is to be found here: http://bugs.digium.com/bug_view_advanced_page.php?bug_id=11688 Currently it is not officially supported in Asterisk. Further information is to be found here:

http://bugs.digium.com/bug_view_advanced_page.php?bug_id=11688

Currently it is not officially supported in Asterisk.

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