The layer specific OSS is configured to selectively request on demand provisioning of bandwidth on {TAIL ~ the sub network} based on {HEAD ~ the predefined bandwidth provisioning policies} 
The layer specific OSS is configured to selectively request on demand provisioning of bandwidth on { TAIL ~ the sub network } based on { HEAD ~ the predefined bandwidth provisioning policies }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD