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Summary:ASTERISK-02963: no audio
Reporter:chrisde (chrisde)Labels:
Date Opened:2004-12-10 10:47:35.000-0600Date Closed:2011-06-07 14:10:48
Priority:MinorRegression?No
Status:Closed/CompleteComponents:Channels/chan_sip/General
Versions:Frequency of
Occurrence
Related
Issues:
Environment:Attachments:
Description:have asterisk outside nat with public ip and client inside nat with private ip. Client is able to register with asterisk. Client is also able to call another phone, connection is being established with alaw or ulaw. But there is no sound.

If client is configured to register with another asterisk server on the net it works. Client from inside nat can call asterisk outside nat. So probably its a configuration problem with my asterisk server, but noone on #asterisk could help me and for me the configuration seems to be ok.

As clients I tried a giptel phone, a topway phone and X-Lite Softphone.

****** ADDITIONAL INFORMATION ******

sip show peers:
Name/username    Host            Dyn Nat ACL Mask             Port     Status  
79/79            80.138.12.111    D   N      255.255.255.255  5060     Unmonitored
77/77            217.81.135.48    D   N      255.255.255.255  5060     Unmonitored

--> clients are being recognized as NAT and DYNAMIC


sip.conf:

[general]
port = 5060
disallow=all
allow=alaw
allow=ulaw
srvlookup=yes
context = test



[77]
type=friend
username = 77
secret = 6723
host=dynamic
dtmfmode=rfc2833
canreinvite=no
context=test
nat=yes

---
I tried with CVS from yesterady, CVS from October and stable 1.0.3. Same behavior.

--
sip show channels
Peer             User/ANR    Call ID      Seq (Tx/Rx)   Format
192.168.0.107    77          Pe3a205WkW2  00101/00002   alaw

---

tcpdump

17:44:40.535329 localhost.localdomain.19774 > 192.168.0.107.8000: udp 172 (DF)
17:44:40.555361 localhost.localdomain.19774 > 192.168.0.107.8000: udp 172 (DF)

--> this is when using giptel phone... when using x-lite it sends to the correct public ip address. .. I think asterisk recognizes 77 as NAT and DYNAMIC with its public ip address (see above) - so why is asterisk sending to 192.168.0.7?... and as I told .. with x-lite it doesnt work also but asterisk is sending to public ip!
---


Comments:By: cherso (cherso) 2004-12-10 10:53:11.000-0600

set fromdomain in sip.conf global.
should be a router nat issue

edited on: 12-10-04 10:53
By: chrisde (chrisde) 2004-12-10 11:21:40.000-0600

sip.conf
[global]
...
fromdomain=62.11.12.13 (public ip address)
...

did not change anything. still no sound
By: Brian West (bkw918) 2004-12-10 11:38:34.000-0600

unload all zaptel kernel modules and tell me if it works.

bkw
By: chrisde (chrisde) 2004-12-10 11:55:55.000-0600

I have no zaptel installed at all. only asterisk. make. make install. no h323, no changes.
By: cherso (cherso) 2004-12-10 16:48:14.000-0600

try to set fromdomain=yourdomainname (a string. Not your external ip address)
the router seems to detect that the outgoing packet is a SIP packet and tries to patch it.
By: twisted (twisted) 2004-12-10 20:36:02.000-0600

Configuration issue