Audio Call from asterisk to amg not working

Hello,

The call is not going through when I try to call from a x-lite phone connected to asterisk to a x-lite phone connected to amg. But vice-verse is running fine i.e. the call connects when x-lite connected to amg calls to an x-lite at asterisk.

The asterisk log for failure is:

== Using SIP RTP CoS mark 5

     -- Called SIP/201/777

     -- No one is available to answer at this time (1:0/0/0)

     -- Auto fallthorugh, channel 'SIP/6001-000000000' status is 'NOANSWER'

The sip.conf as following entry:

[201]

type=friend

context=callingin

host=dynamic

secret=201

disallow=all

allow=ulaw

Thanks,

Sahil.