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Questions tagged [sip]

The Session Initiation Protocol, defined in RFC 3261, is an application layer signalling protocol for establishing and modifying long-running relationships between two or more peers. If including this tag, be sure to also tag your question more specifically to include the language you're programming in, as well as any specific libraries being used such as [pjsip], [python-sip], etc.

The Session Initiation Protocol, defined in RFC 3261, is an application layer signalling protocol for establishing and modifying long-running relationships between two or more peers.

More information at Wikipedia article on SIP

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Android SipManager throwing NullPointException

I'm trying to implement my own android sip implementation and I am having problems registering with my SIP server. Specifically, the SipManager.register() function is throwing a NullPointerException. Has anybody experienced this before? There…
tier1
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pjsua_media.c Unable to open sound device: No suitable sound capture device

I am writing code for a SIP application to make a SIP call. I'm getting the following error after running. Does anyone have the solution? 15:01:12.039 pjsua_media.c ..failed: No suitable sound capture device
Shami
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zaptel error at installation on ubuntu

I am trying to install zaptel and libri in Ubuntu. As I've understood asterisk needs these files if I want to configure a conference call over sip. I've downloaded zaptel and after make command I have the following…
user1222905
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Sip Servlet Creates Faulty Responses (Contact Field)

I'm trying to send a 200 OK response using a Sip Servlet after an Invite request by using request.createResponse(200). Problem is that the Contact header comes out without the "username" part. Why is this happening? Relevant Code: protected void…
Omry Bass
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how to monitor sip packets on android phone/

I am new to android. I would like to monitor the sip packets that my application sends and receive. How to do that? I need some help. My android phone is a Samsung. Appreciate!
user1222905
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Using RTC to disable profile on server?

I have problem with Profile roaming in RTC. so let me describe my program to understand it better. I write Soft-Phone base on sip Protocol, for using Sip I decide using RTC Library for Communication. This Soft-Phone do these features perfectly like…
Rev
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Is it safe to use the android.net.sip framework?

Background: I'm currently looking into building an Android VoIP app for work (we sell VoIP services as one of our products) and have come across the android.net.sip framework. At a glance it looks like they've taken care of all the hard stuff…
Mark McDonald
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Interconnection of SIP applications

As far as I know, there are many applications using SIP : ekiga, linphone, even skype, … Are those device all able to work with each other? I mean, if I register with, say, linphone, will someone on skype be able to ring me?
qdii
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remote dial using SIP client

I want to remote dial from my pc using a simple non SIP client program which I wrote and wchich sends commands to a proprietary SIP client that accepts remote commands via a TCP connection. The proprietary SIP client will then dial the remote party…
John Qualis
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what is H.225,h.245 and iax2 message format?Want to do signature analysis but my packets are encrypted

I am trying to do signature analysis, but all pcap files of h225,h245 and iax2 are encrypted and on net I have not found anything that can help me for getting their signatures. I want to get something like DESCRIBE rtsp://tmlab-share2/WMLoad.asf…
blackfyre
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SIP Registration Issue

I am currently working on SIP sample application. I am trying to do the registration using C based Socket programming on Unix. I have been successfully being able to get register with PJSIP, but when the same parameters I am sending with normal…
Ankit Thakur
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How to program an android service which identifies my home wifi to turn on voip

is there a simple way to program a service for android that turns the native sip client on when the phone gets connected to my wifi at home? Thank You!
user1185219
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How to Hide a SIP connection

I'm developing a SIP mobile softphone, customer needs a complete hiding of SIP messages from softphones to SIP servers as VOIP calls are regionally prohibited, however using TLS connection was not sufficient since the message headers are easily…
Montaro
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call on multiple phones - asterisk

I am working on Asterisk. I have a client that has two phones both registers to the server. He wants to receive a call on both phones when someone calls him on one phone. HOw to do that? Let's say client A has user1 and user2 both registered. When…
Angel Dream
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Asterisk dynamic user agents on PSTN

I'm creating small system as prove concept. I need to configure few 5-10 call queues that will have mix of softphones (SIP) and normal gsm mobiles (PSTN) agents that can login and logout of queue. I'm new to asterisk and whole voip. So after some…
Engrost
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