Specifications

CHAPTER
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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
OL-26895-01
16
Configuring Clocking and Timing
Clock synchronization is important for a variety of applications, including synchronization of radio cell
towers. While legacy TDM protocols incorporate timing features, packet-switched networks such as
Ethernet do not natively include these features. The Cisco MWR 2941 supports legacy TDM
technologies while supporting a variety of technologies that distribute clocking information over
packet-switched networks.
The following sections describe the clocking and timing features available on the Cisco MWR 2941.
• Network Clocking Overview
• Configuring Clocking and Timing
• Clocking Sample Configurations
Network Clocking Overview
Clocking is typically distributed from the core network outward to the BTS or Node B at the network
edge. The Cisco MWR 2941 receives and transmits clocking information using any of the following
ports:
• T1/E1
• Ethernet (GigabitEthernet and FastEthernet)
• DSL
• BITS/SYNC port
• 1PPS
• 1.544Mhz
• 2.048Mhz
• 10Mhz
The Cisco MWR 2941 supports the following clocking types:
• Precision Timing Protocol (PTP)
• Pseudowire-Based Clocking
• Synchronous Ethernet