Thank you very much for the explanation Terry. I knnew some of this stuff (point 1 and 2) and this client is requesting IS equip specifically so you couldn?t be more right.
Im dealing with this thru a 3rd party (the client is a client his). Im just in charge of finding out the viability of using asterisk with IS wifi phones if there are any. |-----Original Message----- |From: [EMAIL PROTECTED] |[mailto:[EMAIL PROTECTED] On Behalf Of |Terry H. Gilsenan |Sent: Miércoles, 15 de Junio de 2005 11:29 p.m. |To: 'Asterisk Users Mailing List - Non-Commercial Discussion' |Subject: RE: [Asterisk-Users] WiFi IP Phones | | | |> -----Original Message----- |> From: [EMAIL PROTECTED] |> [mailto:[EMAIL PROTECTED] On Behalf Of Anton |> Krall |> Sent: Thursday, 16 June 2005 6:53 AM |> To: [EMAIL PROTECTED]; 'Asterisk Users Mailing List - |Non-Commercial |> Discussion' |> Subject: RE: [Asterisk-Users] WiFi IP Phones |> |> I know... The term "anti explosive" is new to me.. I never |heard of it |> but a possible client is asking for that exactly since the |phones are |> going to be used in oil refinary and r&d platforms using voip over |> satelite connections... |> |> What do you think? |> |> BTW, how is voip over satelite? I know you have the usual 500 ms lag |> for up and down stream delays but hows quality? | |Anton, | |1, Intrinsically Safe is a _Requirement_, not an option on an |oil rig, refinery, etc... There are a few "Zone Categorys" |within the IS framework, and different equipment is certified |by an independent body to pass different tests, and so get |different ratings. | |2, Each and every IS certified device is shipped with a |Certificate explaining the _exact_ rating and zone category |that the item has been certified for. This certificate will be |tied to the device by serial number. | |3, Each and every IS certified device and its powersupply are |tagged with a green <Ex> or Fm sticker that displays the Zone |category for which they have been certified, this _Must_ match |the details of the accompanying Certificate. | |4, Using non IS equipment in an IS zone will likely void any |and all private, public, and other insurance for the entire |site, and most likely result in the "On the spot" dissmissal |of the person that brought the non IS device on-site, and will |at the very least cause a muster and possibly a shutdown that |in the case of an offshore oil platform could cost about |$10Million in lost production before the plant could re-start. | |5, How do I know this? I work for an oil company and it is my |job to make sure that IS regulations are followed. Ie: my job |is on the line. | |6, VoIP works fine over vsat, there is a slight delay, but it |is easy to get accustomed to it. In fact the quality can be |better than some intercontinental voice calls using telco's as |the pipe. | |Further, there are sections of a refinery or oil rig that are |not IS zones, |eg: Sleeping quarters, mess(canteen) An asterisk box could be |located there and added to the existing OF infrastructure, or |added to existing IS certified equipment using TDM cards. | |On the platform itself they will need both an IS Intercom and |handheld IS VHF or UHF radios (Both for HSEQ reasons) | |I hope this helps | |T | |_______________________________________________ |Asterisk-Users mailing list |[email protected] |http://lists.digium.com/mailman/listinfo/asterisk-users |To UNSUBSCRIBE or update options visit: | http://lists.digium.com/mailman/listinfo/asterisk-users | _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
