SMS SERVICE FROM R/3

Hi you all Experts,

We have configure SMS Service using HTTP (Pager Node) in R/3 same as we configured in PI. SMS service conflagration is working fine in PI and we are receiving SMS at our mobile phones. But could not receive SMS to our mobile through R/3.

We got following error in SOST.

Message cannot currently be transferred to node SMS:*********** due to connection error

System Response is:-

HTTP_CLIENT->RECEIVE Error Code: 1_403 ICM_HTTP_SE

We checked everything from our end and do all needful troubleshoot for this issue as per documents available on internet. But we can't able to resolve this problem.

You suggestions are highly appreciable for us.

Thank you.