Dial-In = Perfect <> Dial-Out = Half Duplex

[dalexop]

Hi there,

When calls come in, the calling party can here us and we can hear them.

When we place calls, the called party can hear us, but we cannot hear them.

We can hear dial tone when picking up the phone.
We cannot hear the calling sequence / tones either.

This started last week, prior to this the system wored well for over 6 months.

I have a SPA 3102, no errors or odd conditions exist.

Any thougts ?
Thanks
Derek

[Jake]

Send a PM to Fongo Support with your number and a link to this thread. He managed to get a few people's account sorted out that was doing this last week. They reported back that they didn't need to change anything and it started to work, but unfortunately it was not reported what, if anything, was done their end.

Hopefully he might be able to help with this.

[dalexop]

Hey Thanks Jake !
I happend to find a similar thread in the FreePhoneLine Forum on this site.

That thread suggested that server side changes necessitated us to open RTP ports on our Firewalls.

I tried the suggestion and it indeed worked.

I opened a live calle and started opening the RTP port range starting from 16384.
Once I hit the top of the range ( 16440 ) the call immediately started to work.

I`ll continue to test, but it looks good at the moment.

This is one great forum !

[dalexop]

*** Update ***

I tested long distance numbers and they still did not work.
I could reach local numbers with success, but Long Distance calls still remained with the called party could hear us but we could not hear them.

I ended up opening all UDP RTP ports on my Router ( from 16384 to 16482, which was the maximum range ) and Long Distance Numbers worked as well.

So unfortunately you cannot ``cherry pick`` RTP ports when opening them up.
I had to open them all.


Anyways, the ATA is now working.

[Jake]

*** Update ***

I tested long distance numbers and they still did not work.
I could reach local numbers with success, but Long Distance calls still remained with the called party could hear us but we could not hear them.

I ended up opening all UDP RTP ports on my Router ( from 16384 to 16482, which was the maximum range ) and Long Distance Numbers worked as well.

So unfortunately you cannot ``cherry pick`` RTP ports when opening them up.
I had to open them all.


Anyways, the ATA is now working.

I actually mentioned this below your post in the other thread http://forum.fongo.com/viewtopic.php?p=44644#p44644

[dalexop]

Hi Jake,
right you are sir !
I just read your reply to that thread.

That`s not a bad idea, do you know how many RTP ports are opened during the call sequence ?
Where does the port negotiation take place ?
I ask because I am opening my fw to these inbound ports, therefore the server must be having a "conversation" with my 3102 in order to decide on what ones to use.

Thanks
again,
Derek

[Jake]

Hi Jake,
right you are sir !
I just read your reply to that thread.

That`s not a bad idea, do you know how many RTP ports are opened during the call sequence ?
Where does the port negotiation take place ?
I ask because I am opening my fw to these inbound ports, therefore the server must be having a "conversation" with my 3102 in order to decide on what ones to use.

Thanks
again,
Derek

As far as I know, 2. One for audio each way.

[dalexop]

Gotcha !
Perhaps I'll port mirror and run Ethereal against it.
That would tell me for sure.
I'd like to reduce the window and see what the least amount of ports will still work.

Thanks mister.

Derek

ps. the wierd thing I haven't figured out yet is why it still worked when someone dialed me ?