Any free SIP client on IPhone & Android are good compatible on MBG?

[max1017]

I have try few apps. isphone ,VaxVoIP. it can make internal call,then i try to call outgoing trunk, it work but some time it both way no sound.
Do you have any experience on this situation? any good suggestion on apps?

Thank you!

 

[KurpeusLondon]

What kind of outgoing trunk is that ?

usually one/two way audio issues are to do with firewall and nating issue where the firewall isn't inspecting the data payload of the SIP packet correclty and although the firewall nat/pat the IP/UDP header and it does not change the IP addresses in the session description protocol of the SIP packet. The SIP protocol is design to respond to the address defined in the SDP packet not the IP address of the packet.

Make sure the network you wireless clients belong to is defined as a part of the voip domain in your firewall.

 

[SXWizard]

I use Bria on my iPad as a SIP phone connected via MBG to our 3300. Works fine.

 

[max1017]

I mean the outgoing truk is T1 and the sip client working intermitently.

I try to use ISphone on Iphone, and x-lite on pc. they are in the same network,both calling same number, but ISphone working intermitently, x-lite working good. Is it mean is the SIP client's problem? sould i bought Bria?

PS:when I setup a SIP device on 3300, Way i need to setup MBG to let the SIP device working outside the intranet? can I skip the MBG server?

 

[LoopyLou]

IF you want the device to work outside your network you would either need VPN software to directly connnect the device to your network or you need the MBG.

if a PC based X-Lite works but ISphone doesn't then look to either the client or the wireless netork.


The single biggest problem with communications is the illusion that it has taken place.

 

[cknipe]

I dont want to be a negative nancy on the subject but I tried this and found that what you generally have to do with these is be sure you register these devices on the LAN first....I always ran into less headaches when I did it this way. Then after that, try to register it in teleworker mode. Now for negative part. I want to say that I was using Csipsimple as the client. The negative part that I found was that in order to maintain a good conversation without jitter, I really had to be on 4g or wifi. A great idea for a sip client would be to have the ability to do call control over 3g and then transmit voice conversation over 4g,wifi, then 3g if the other 2 arent availible. The reason I say this is because there is no way this is a usable solution unless you keep your phone plugged in all the time. Otherwise my battery seemed to die within about 1.5 - 2 hours while registered to the teleworker. Hopefully the tips above help you through your testing though