OS904-MBH

The OS904-MBH is a compact Carrier Ethernet purpose-built cell-site Demarcation device that enables high-quality timing synchronization over packet switched networks.

High-quality timing synchronization is extremely important in 2G GSM, 2.5G GPRS, 3G UMTS and 4G LTE/WiMAX mobile networks for a successful call signal hand-off between cellular base stations.

The OS904-MBH allows operators a migration to packet-switched networks without the loss of traditional TDM-quality synchronization to cellular base stations. The solution functions as an Ethernet Equipment Clock (EEC) and combines the two leading technologies existing for packet-switched networks synchronization: Physical layer Synchronization over Ethernet (SyncE) and Precision time Protocol (PTP -1588v2). By integrating both timing technologies, the OS904-MBH enables timing-gateway functionality between Synchronous and Asynchronous physical layer networks. Such flexibility enables end-to-end synchronization with maximum investment protection of the existing network infrastructure.

Files download:: Letter Datasheet; A4 Datasheet

Features

Physical Layer Synchronous Ethernet features
Compliant to ITU-T standards
G.8261 – Timing &synchronization aspects of packet networks
G.8262 – Timing characteristics of Eth’ equipment slave clock
G.8264 – SSM (Synchronization Status Message)
G.736, G742, G.813, G.823, G.824
Input clocks priority can be set manually or switchover can occur according to SSM value
Phase transient protection and phase build-out on locked-to reference and on reference switching
Precision holdover accuracy based on internal Stratum-3 OCXO
Precision Time Protocol features
Compliant to IEEE1588v2 – Telecom Profile
PTP IEEE1588v2 Slave mode function
Hardware time-stamping, network noise suppression, network re-route accommodation and holdover
Alignment to PTP Grandmaster and generate time of day signals as well as clock signals
Dynamic adaptation to network delay variations
- Network loading change tolerant