Session Initiation Protocol is one of the protocols used for controlling sessions (signaling) in internet telephony.
Questions tagged [sip]
151 questions
14
votes
3 answers
What's the most advanced SIP client for Linux these days?
I'm currently struggling which SIP client software to use with respect to Ubuntu / Gnome.
Some clients I've looked so far:
Blink, seems promising but the Linux variant lacks a lot of features
Twinkle Latest release is ~2 years old. AFAIK the only…
9
votes
2 answers
Which one VoIP SIP audio codec should I choose to high quality calls?
The quality of VoIP calls depends on the codec used for the transmission and on the bandwidth of Internet connection.
I want to use best optimized codec for my Internet connection.
I have to select codecs from the following list:
G.722
G.711 u…
BlueMark
- 287
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- 4
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9
votes
1 answer
linphone: remove/hide "default identity"
Linphone 3.6.1 automatically generates a computer-local SIP identity called "Default Identity".
"Real" SIP accounts you have at a VoIP provider need to be created as "Proxy accounts":
The main window has a dropdown to select the current…
cweiske
- 2,191
7
votes
3 answers
microsoft lync linux client
we are currently evaluating Microsoft Lync server (previously Microsoft Office Communications Server).
It talks sip over TLS (TCP 5061) with SIMPLEmessaging,
what linux client would you suggest to use voice, SIMPLE (text) messaging and maybe even…
golemwashere
- 336
6
votes
3 answers
Recommended client to handle more than one SIP account?
I currently have two SIP accounts, so Counterpath's XLite won't do, as it only handles one. They have a commercial version (Bria, eyeBeam : Not sure of the difference).
Before I buy either Bria or eyeBeam, I'd like to check if this is the only good…
OverTheRainbow
- 5,779
5
votes
5 answers
Do VoIP packets travel through the internet link in LAN calls?
or do they leave the LAN if they don't really need to?
If both parties in a call are in the same LAN, does the SIP/Skype call voice packets travel in and out through the internet?
If so, how do I to avoid it? I want to save bandwidth and improve…
Jader Dias
- 16,236
4
votes
2 answers
How do I make a SIP call from behind an HTTP Proxy?
We browse websites using an HTTP proxy; there's no direct internet access. The only VoIP program that works out-of-the-box in our network is Skype and it's using that proxy too.
For example, I want to talk to someone who's using Linphone. Is it…
basin
- 534
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- 17
4
votes
2 answers
One way broadcast of SIP call using Wowza
I have a POTS conference call taking place and I want to live stream the audio over the internet using Wowza. My plan is to dial into the conference call essentially bridging the audio onto the Wowza server. I've got Wowza working very well on…
Richard
- 131
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4
votes
4 answers
SIP client to open a web page with caller ID
Does anyone know of a SIP client that can open a web page to a configurable URL when someone calls? We have a web-based database, and I'd like to search by phone number whenever we get an incoming call, and have the person on screen before I answer…
rjmunro
- 1,386
3
votes
0 answers
getting pbxes, sip2sip, ipkall all working
I was able to make a call from my landline to my ipkall number and have it ring on my android device running sipdroid. Just once. Since then, when I call my ipkall number, I get "The person at extension .... is unavailable".
I can see my incoming…
user12468
- 227
3
votes
0 answers
Ekiga softphone shows as "registered" -- but is it actually?
Is Ekiga actually registered? How would I know?
I think Ekiga connects, or at least it says "registered":
But, when I exit Ekiga, and use SFLphone, it fails to register:
While sipsak shows a 200 OK for tleilax:
thufir@doge:~$
thufir@doge:~$ sudo…
Thufir
- 1,808
3
votes
2 answers
Android won't register SIP on FritzBox router
In the past I've used VoIP/SIP apps to call from my Android phone. Recently I got the upgrade to Android KitKat (4.4.x) and I've noticed that it includes SIP accounts natively (accessible through calling app, settings, SIP accounts). It didn't work…
Luc
- 3,411
3
votes
1 answer
Failed to make SIP calls (Asterisk + PhonerLite + Zoiper + Blink)
I've installed Asterisk PBX on a VirtualBox virtual machine, then created 3 phone extensions:
101 - PhonerLite,
102 - Zoiper,
103 - Blink
all of them are configured as "friends". All the clients are running on the same computer.
101 and 102 can…
Paul
- 986
3
votes
2 answers
What is SIP, in plain English?
I have tried reading the Wikipedia page for SIP but I can't follow at all (incidentally, it is currently marked as too technical).
What exactly is SIP? I understand how it is a protocol for transmitting voice over TCP, but that is not very helpful.…
Superbest
- 2,120
3
votes
0 answers
SIP plugin for Trillian
I like using Trillian for chats (Skype, Google Talk, ...) but I cannot add a SIP Account to make calls with Trillian directly.
Google always tells me to download the SIP Plugin for Trillian, but this is NOT A SIP Plugin, it is a plugin for the…
FiveO
- 8,268