Asterisk and Cisco FXO

Hi,

I configured Asterisk with Cisco 2620 router with VIC-2FXO card.

Asterisk configured to redirect PSTN calls to the cisco router.

When I make a voice PSTN call, I just hear the first ring, no thing else.
Dialed phone ringing, but hear nothing when answered

sip.conf

[ciscogw1]
context=pstn-incoming
type=friend
host=196.x.x.x
dtmfmode=rfc2833
disallow=all
allow=g729
allow=ulaw
allow=alaw

extensions.conf

[pstn-outbound]
; Calls starting with 9 have the 9 stripped & are then routed out to the PSTN
exten => _9.,1,Dial(SIP/${EXTEN:1}@196.x.x.x)

Cisco IOS

dial-peer voice 100 pots
destination-pattern 9…
port 1/0/0
forward-digits 7

sip-ua
sip-server ipv4:x.x.x.x

Thanks
widi