To adjust, change the codec settings on your phone so that the primary preference is a common codec with the other party's phone. If you compare this to the other party's phone settings, the problem may become immediately apparent. This is how you'll see your available codecs listed. If you have access to SIP packet traces for the phones (this is provided by some phone vendors in the diagnostics), look for a line that begins with "m=". has a thorough discussion of codecs if you'd like more information. For calls that we send and receive from the PSTN, we force ulaw if it's available for greater compatibility with the PSTN. This preference is modifiable on most phones and is how extension-to-extension calls on our network work. The way two phones decide how to communicate is to select a codec available to both phones, choosing the common codec with the highest preference. The other possible cause of this problem is that the two phones cannot agree on a common codec. If you see both then your phone and firewall are correctly sending your TCP/IP address information to OnSIP. Jitsi is an Open Source / Free Software, and is available under the terms of the LGPL. Separately, you should see a 'NAT Address' line showing your external IP address. Product: Jitsi Company: Jitsi OS: Windows, MacOS, Linux Overview: Jitsi (formerly SIP Communicator) is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, Yahoo and many other useful features. You should see a 'Contact' address like: The important part is that there is a 'Contact' line and the IP address is an 'internal' IP address, e.g. Scroll down to the 'Maintenance' block and click on '(Show Details)' next to the SIP Registrations line. Click on the name of one of the users to see the User Detail. To see if your phones/firewall are sending OnSIP the proper packets, log into the Onsip interface and click on 'Users'. Our network will return the same port for inbound audio as outbound audio, which simplifies the job for the NAT devices involved. To disable this feature, allow OnSIP to handle NAT detection by turning NAT detection off in your phone settings and turn OFF any SIP-aware functions on your firewall. The NAT/Firewall is blocking the inbound audio stream. The typical situation is that you can be heard, but you cannot hear the audio coming in the opposite direction.Įxplanation: The probable cause of your issue is a codec mismatch or a port issue with your NAT device. You can do an awful lot with Jitsi, say if you’re a company and want to hold secure video conferences using your own servers but you’d be best advised to get an IT tech to set it up for you.įor beginners, there’s some guidance on the Jitsi website.When I make a call, the other party can't hear me, but I can hear them (or vice versa). If you just want to sign in using an existing account, that’s easy enough and all you have to do is to download the installation file and follow the instructions. And of course you can have it in Gaelic – a brilliant way of forcing some Gaelic on Facebook Chat or GoogleTalk! And there’s even a Gaelic spellchecker bundled with it: You get what you’d expect from a communicator, such as: It’s another Open Source project, not a commercial operation so they have no interest in mining your personal data and are quite proud of their strong encryption and security protocols. It can handle numerous protocols such as SIP, XMPP/Jabber, AIM/ICQ, Yahoo!, Facebook and GoogleTalk and therefore allows you to handle all your chat applications in one place at the same time. This is a tad geeky, at least the current version, but if that doesn’t frighten you, here’s a video, audio and chat communicator for you.
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