Ku is very sensitive to rain fade or big cities with a lot of polution. I have always used C band. 8 MHz (by 2 to make it duplex)would be taken very fast by SIP unless a well balance CODEC is used (such as g729). Also make sure that there is no double compression going on. Regards, Uriel
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Olaf Menzel Sent: Sunday, October 12, 2003 6:02 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: Fwd: RE: [Asterisk-Users] SIP / IAX over satellite Hi all, -------- thank U all for your very fast response. I want to clarify that my question was not regarding about the fasibility of Voip over satellite in general but especial the behavior of the Asterisk PBX on a long delay path. We just successfully tested H323 Voip with a Innovaphone IP 2000 over satellite to a Innovaphone PSTN Gayteway. It works fine if you be aware about the > 500 ms RTT and you are ready to train youself a little bit in conversation discipline. BTW. We are operating a DVB hub station over SESAT 36 E on transponder G6, Ku band. SESAT "hangs " directly over Sibirea and covers with his wide beam all of Europe and most of Asia and the north part of Africa. We have 8 MHz space segment and using 64 - 384 kBits FDMA DAMA in the return channel. The reason for the registration timeouts can probably in a very short programmed "registration timer". Maybe somebody of you is familiar with the Asterisk source code and knows which of the "wheels" I have to turn. It would help me very much. (:-) I would prefer to use SIP rather than IAX over satellite because I am more familar with it. To diagnose this behaviour I will test the satellite link with the SIP test tool SipSak (http://sipsak.berlios.de) and later with a network link simulator to increase the propagation delay step by step until the SIP registration times out. First of all I will test a Snom-2-Snom direct connection without any SIP registrator or proxy. I this works the debugging can go on. BTW. If somebody of you knows how to configure the setup below in iax.conf and extensions.conf I would be very happy, because it would spare a lot of time for me with trials and errors. (Sip configuration is clear) Snom-Office ------SIP----- *-Office ------ IAX --- SAT ----IAX ----*-Field--- SIP--- Snom-Filed many regards Olaf <http://dict.leo.org/?p=lURE.&search=feasibility> _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
