[Asterisk-Users] Asterisk ---> Cisco AS5XXX sip one way audio

[Jorge Verastegui G]

Hi,

I trying to use asterisk for 

PSTN(A)----> Cisco AS5xxx ----> ASterisk---->PSTN(B) 

(No Nat no Firewall)

I hear (on the PSTN(A)) clearly what the other person is saying, but the
other person (on the PSTN(B) side) hears nothing from PSTN(A).

I use tcpdump for debug de rtp trafic, and ouput contains only trafic 
from Asterisk to Cisco AS5XXX

The sip.conf configuration contains

[cisco1]
type=friend
host=XXX.YYY.ZZZ.VV
dtmfmode=inband
insecure=yes
insecure=very
context=fromsip
reinvite=no
canreinvite=no
disallow=all
allow=g729
allow=ulaw
allow=alaw

I tried to search the internet for the message, but I got no results

Please help me

-- 
Jorge Verastegui G <jorge at redcetus.com>
RedCetus S.R.L.