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Wed 01 of Aug, 2007 [09:11 UTC]

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  • Aykut, Wed 01 of Aug, 2007 [07:53 UTC]: Hi all, does anybody know about Thomson ST2030 SIP phone. I have upgraded it to latest version (1.56) but "Hold" and "Conf" features are not working after the upgrade ?? Do you know any solution or do you have Ver. 1.52 ?? Where can I find it?
  • Edward J Brown, Tue 31 of Jul, 2007 [23:33 UTC]: Has anybody experienced Choppy voice quality when using a Linksys SPA942 in an Asterisk Conference bridge? It works fine with my polycom and Cisco, but sucks with my Linksys.
  • www.astawerks.com, Fri 27 of Jul, 2007 [18:00 UTC]: does anyone use asterisk on top of clark connect? does it work good?
  • simon, Fri 27 of Jul, 2007 [14:16 UTC]: Hi All, Has anyone here managed to get the Cisco79x1 to successfully fail over to the backup proxy. I have 2 asterisk servers , handsets all register and function, except that backup proxy function doesn't work. Any working example would be very apprecia
  • Matthew Richmond, Thu 26 of Jul, 2007 [03:40 UTC]: using the page() application to page across our building...often the meetme conferences don't disconnect after the caller hangs up. Anyone else having this problem. (using Polycom phones)
  • Matthew Richmond, Wed 25 of Jul, 2007 [02:58 UTC]: thanks Nicholas Blasgen! I haven't worked with AGI before, but there's always a first! Thanks again!
  • Nicholas Blasgen, Tue 24 of Jul, 2007 [19:18 UTC]: Matthew Richmond, AGI will handle all that for you.
  • sam, Mon 23 of Jul, 2007 [16:39 UTC]: need help - certain voicemail extension will stop working and recording voicemail on asterisk - anyone know why and how to fix it? Thanks
  • john haji, Mon 23 of Jul, 2007 [14:55 UTC]: free calls to pakistan
  • bong, Sat 21 of Jul, 2007 [19:09 UTC]: hi good day to all can anyone help me how to configured the nortel sip to the signaling server and how to activate in mobile w/ sip compatible without mcs
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VOIP and TTY

TTY (Telecommications Device for the Deaf) is a technology used by the hearing impaired to communicate over the phone. In the USA support of TTY is required in some public places (call centers, hotels, etc).

Asterisk has some basic Alpha level code (as at december 2006) with support for TTY.
There is some additional information available at tdd mode. Asterisk svn trunk
will soon (feb 2007) have support for T.140 realtime text.

See Also

Created by admin, Last modification by oej on Tue 13 of Feb, 2007 [13:12 UTC]

Comments

Comments Filter

New Text-over-IP protocol

by Barry Dingle on Wednesday 31 of May, 2006 [02:28:50 UTC]
A new real-time Text protocol has been developed. It is often referred to as ToIP. It has been defined by the IETF in RFC 4103. It is very similar to VoIP as it uses the SIP control protocol and a Variation on the RTP protocol. It works on the ordinary Internet - that is, without added QoS - because it has built-in real-time error correction. A trial version of User Application that uses this ToIP protocol is called SIPcon1 and is available from SourceForge.net. Try a Google on SIPcon1. It works really well.
ToIP is designed to be part of the Voice/Video/Text-over-IP multi-play services that are being developed today. It is aimed at mainstream use with some features included to make it easier to interwork with TTYs text phones that operate on telephone networks.
TTYs were developed for analog telephone networks. ToIP was developed to use all the features of the Internet. /Barry

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