Asterisk uses different ports than thoose in the rtp.conf

Asterisk Asterisk Support
1

Hello!

I’m having a weird problem with Asterisk 1.2.13, running on a Linux box.
I have a firewall, which lets any needed port through the ports 30000…32000 for RTP, as specified in rtp.conf:

[general]
rtpstart=30000
rtpend=32000

BUT: the RTP stream is often sent through a port which is not in this range!!!
So there is often no audio!

Is this a bug?
There is no NAT just a firewall.

Thanks in advance!

Xnor[/code]

2

RTP port settings is a device thing… check the device setup…

by default devices use different ranges…
go set the range to what you want your devices to use

3

Hi!

Thanks for your post! Unfortunately there is no device on the other end of the SIP connection but a SIP provider: www.voipdiscount.com
Can I still force the use of a specified port range somehow?
(I don’t think voipdiscount will change his settings, just for me ! :frowning: )

Bye!
Xnor

4

I doubt they will. Ask them if there is a specific range that you can use so you have a limited amount of ports open.

5

Hi!

Thanks, I’ll for sure ask them. Too bad, until know they seem to use just a random port from port 1024 upwards.
Maybe someone knows a possibility to enforce the use of a port range?
I know if they are using a sip aware firewall it will probably not work, but maybe they have just left any port in a wide range open. (Which is probably quite uncommon.)
Or I should just use a STUN enabled SIP proxy in front of Asterisk?
GRR… Things getting complicated. :confused:

Xnor

6

[quote=“Xnor”]Hi!

GRR… Things getting complicated. :confused:

Xnor[/quote]

Welcome to Asterisk. After you bang your head against the wall for a while you will figure things out.

7

Thanks,
this helped! A lot!
:wink: