The RAN_SVC card performs circuit emulation and optimization on traffic from 3GPP RAN nodes and
provides IP based backhaul of the optimized traffic to other peer nodes. The optimized traffic is received by the ONS-RAN-SVC from peer cell site routers on VT1.5 circuits from the Cisco ONS 15454 cross connect card or from native GE ports on the RAN_SVC card.
Optimized traffic may be received on the ONS node over a variety of rate interfaces higher than VT1.5,
such as OC3 through OC192 on the ONS 15454. The data is then reconstructed by the RAN_SVC onto VT1.5 circuits and sent back through the cross connect card. The reconstructed traffic is externally delivered to the 3GPP RAN nodes over DS1 and OC-3 interfaces.