Cisco Cisco ONS 15454 SDH Multiservice Provisioning Platform (MSPP)

Variables not visible to the user are uninitialized. The variables are not used so there is no bad behavior 
observed. However, these variables interfere with our ability to debug ospf-related issues. These 
variables are uninitialized on non-OSC links. The variables are isOptLinkEast and optRingID. They take 
on random values for non-OSC links. No workaround available. There is no visible or adverse effect to 
this issue. This issue is resolved in Release 6.2.2.

This section highlights new features and functionality for Releases 7.0.x. For detailed documentation of 
each of these features, consult the user documentation.

Release 7.2 software and TL1 documentation support the RAN-SVC card; however, the card itself is not 
yet available. Additional documentation for this card type, as well as an update to the release notes, will 
become available when the card is released in the future.

Release 7.2 adds support for the Cisco Radio Access Network (RAN) Optimization solution with the 
new Cisco ONS 15454 RAN-SVC card, which implements aggregation node functionality in a RAN. 

A typical Radio Access Network (RAN) is composed of Base Transceiver Stations (BTSs) or Node Bs, 
of Base Station Controllers (BSCs) or Radio Network Controllers (RNCs), and of Mobile Switching 
Centers (MSCs). The traffic generated by a BTS or Node B is transported to the corresponding BSC or 
RNC across a network, referred to as the backhaul network. The interface between a BTS and a BSC in 
Global System for Communication (GSM) and Code Division Multiplex Access (CDMA) systems is 
called the Abis interface. The interface between a Node B and an RNC in a Universal Mobile 
Telecommunication System (UMTS) is called the Iub interface.

In RAN Optimization, the Cisco MWR 1941-DC-A router extends IP connectivity to a cell site and a 
BTS. The router provides bandwidth-efficient IP transport of GSM and UMTS voice and data bearer 
traffic, as well as maintenance, control, and signaling traffic, over a leased line backhaul network 
between the BTS and leased line termination and the aggregation node via compression (cRTP/cUDP) 
and packet multiplexing (PPP mux and Multilink PPP).

In the Cisco ONS 15454, the RAN-SVC card transmits and receives E1/T1 data streams (for Abis) and 
OC-3 data streams (for UMTS) via the cross-connect cards.

The RAN-SVC card performs circuit emulation and optimization on traffic from 3rd Generation 
Partnership Project (3GPP) RAN nodes and provides IP-based backhaul of the optimized traffic to other 
peer nodes. The RAN-SVC card, when combined with the T1-56 and OC-3 cards, provides a