Specifications

64
Release Notes for Cisco 7000 Family for Cisco IOS Release 12.1 T
78-10811-05
New and Changed Information
MIX-Enabled 2/4/8 Port Multichannel T1/E1 Port Adapter with CSU/DSU
Platforms: Cisco 7200 series routers
The Multiservice Interchange (MIX) port adapter adds time-division multiplexing (TDM) connection
capabilities that enable you to combine types of traffic traveling through Cisco 7200 VXR series
routers. On the Cisco 7200 VXR series router, MIX enables TDM connections between two ports on
the same MIX-enabled port adapter.
MIX functions permit connection of TDM streams to support applications that are sensitive to time
delay, such as voice and video, and provide customers the flexibility to manage this traffic through the
router as traditional TDM connections or in a packet-based format. In addition, Extended Availability
Drop and Insert (EADI) capabilities have been added, which allow MIX connections to stay up through
a router reload.
The 2/4/8 Port Multichannel T1/E1 port adapters are now enabled with a Multiservice Interchange
(MIX) card. The MIX card enables the connection of TDM traffic from any port on a MIX-enabled
port adapter to any other port on the same MIX-enabled port adapter on the Cisco 7200 VXR platform.
The following port adapters are currently MIX-enabled:
• PA-MCX-2TE1
• PA-MCX-4TE1
• PA-MCX-8TE1
Multiport T1/E1 ATM Port Adapters with Inverse Multiplexing over ATM
Platforms: Cisco 7100 series, Cisco 7200 series, and Cisco 7500 series routers
The inverse multiplexing over ATM (IMA) port adapter is a single-width port adapter that allows Cisco
7100 series, Cisco 7200 series, and Cisco 7500 series routers to support inverse multiplexing over ATM.
These port adapters support WAN uplinks at speeds ranging from 1.544 Mbps to 12.288 Mbps for T1
connections and from 2.048 Mbps to 16.384 Mbps for E1 connections.
With the scalable Cisco ATM IMA solution, network designers and managers can deploy only the
bandwidth they need, using multiple T1 or E1 connections instead of more expensive T3 or OC-3 lines
to bridge LANs and ATM WAN applications. Enterprises and branch offices can aggregate traffic from
multiple lower-bandwidth physical transmission media, such as T1 or E1 pipes, to transmit voice and
data at high-bandwidth connection speeds.
Network Services Engine
Platforms: Cisco 7200 series routers
The network services engine (NSE) is the latest processor engine for Cisco 7200 VXR routers. The
NSE delivers wire rate OC-3 throughput while running concurrent high-touch WAN edge services. It is
the first Cisco processing engine to offer integrated hardware acceleration increasing Cisco 7200 VXR
series system performance by 50 to 300% for combined “high touch” edge services. NSE takes
advantage of a new technology called Parallel eXpress Forwarding (PXF).