PTN990 Network Applications

OptiX PTN 990 in networks such as Shown in Figure 2. Figure 2 OptiX PTN990 Switching Processing Capability

OptiX PTN990 equipment has large-capacity packet switching processing capability and multi-granularity The OptiX PTN990 is a high-capacity packet switching and multi-granular service access device that can fully meet the processing power requirements of the access or aggregation layer of a metro transport network.

The optiX PTN990 supports switching capabilities such as

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• < p> Clock extraction from E1/channelized STM-1 interfaces is supported.

• Support for clock extraction from synchronized Ethernet interfaces.

• Supports clock extraction from 2Mbit/s or 2MHz external clock interfaces.

OptiX PTN 990 supports three clock operating modes: tracking, hold, and free oscillation. SSM (Synchronization Status Message) can be processed and delivered.

Ethernet Synchronization is an Ethernet physical layer clock synchronization technique, similar to SDH clocking. Clock synchronization is achieved by extracting the clock directly from the serial code stream on the Ethernet line and using that clock to send data.

PTP Clock/Time Synchronization

PTP time synchronization can reach nanoseconds accuracy, meeting the 3G base station requirements. level, which meets the requirements of 3G base stations. OptiX PTN 990<span class="keyword" id="ZH-CN_CONCEPT_0233013707__zh-cn_topic_0234312256_keyword5156174015132_3& quot;> The following clock/time synchronization functions are supported:

• Support for clock synchronization using IEEE 1588 V2 protocol, CM -UPTS protocol for clock synchronization and time synchronization.

• Supports BC (Boundary Clock) mode, OC (Ordinary Clock) mode, TC (Transparent Clock)/TC+OC mode. The delay mechanism of each mode can be further categorized into E2E (End-to-End) mode and P2P (Peer-to-Peer) mode.

• Support BMC clock source selection algorithm.

• Support for ultra-high precision clocks.