Help with BandTel

[sliderip]

I signed up for BandTel service. It seems to work fine except i have one way audio on a remote extension.

I have defined 3 trunks for BandTel
[band1]
username=2xxxx00001
type=peer
secret=xxxxxxx
qualify=yes
outboundproxy=proxy1.bandtel.com
nat=yes
insecure=very
fromdomain= external IP of PiaF
dtmfmode=rfc2833
context=from-pstn
canreinvite=no
host=dynamic
allow=all

[Band2]
username=2xxxx00001
type=peer
secret=xxxxxxx
qualify=yes
nat=yes
insecure=very
dtmfmode=rfc2833
context=from-pstn
canreinvite=no
host=65.175.129.133
allow=all

.......

Does anyone have input on how to configure BandTel service?

Thanks