On Thursday 05 Feb 2015, jg wrote:
Calling from ServerB to ServerA works, but not vice versa. The only odd
thing that appears to me is the different perceived port on ServerA.

Does someone have an idea at what to look in detail?

Look in /etc/asterisk/iax.conf in the first instance.


Basically I used the example from the Asterisk book "Connecting Two Asterisk Boxes Together via IAX" and there is not a lot to see:


; Server A
[general]
;           this box            remote IP
register => ServerA:very_sec...@80.152.xxx.xxx

disallow=all
allow=alaw
allow=ulaw
allow=gsm

jitterbuffer=no
forcejitterbuffer=no
autokill=yes


; the other box
[ServerB]
type=friend
trunk=no
auth=md5
encryption=yes
secret=very_secret
context=from-ServerB
qualify=yes
host=dynamic
; end of Server A


; Server B
[general]
;           this box            remote IP
register => ServerB:very_sec...@79.233.yyy.yyy

disallow=all
allow=alaw
allow=ulaw
allow=gsm

jitterbuffer=no
forcejitterbuffer=no
autokill=yes

; the other box
[ServerA]
type=friend
trunk=no
auth=md5
encryption=yes
secret=very_secret
context=from-ServerA
qualify=yes
host=dynamic
; end of Server B

If I replace the WAN addresses of the two routers with addresses on the LAN, everything works. Currently, I am not sure whether it could be a NAT related or Asterisk configuration problem.

jg

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