Huawei 03020CQV SSN4GSCC OSN3500 7500 System

• DC power-supply chassis: 15
• AC power-supply chassis: 12

• SDH protection: linear MSP, ring MSP, SNCP, E1 SNCP, 64K SNCP, and hitless protection switching
• EoS protection: LCAS, LPT, STP/RSTP, LAG, and DLAG

• 1+1 protection for the power supply board
• 1+1 protection for the system control, switching, and timing board
• Tributary protection switching (TPS) for E1/T1 services
• Fan protection (The failure in a single fan does not affect the operation of the other fans.)

Packet:

• Ethernet service OAM: CC, LB, LT, AIS, LM (only single-ended LM), DM (only two-way DM), and RDI
• Ethernet port OAM: OAM auto-discovery, link performance monitoring, remote loopback, fault detection, and self-loop detection

TDM:

• Ethernet service OAM: CC, LB, LT, and OAM_Ping
• Ethernet port OAM: OAM auto-discovery, link performance monitoring, remote loopback, fault detection, and self-loop detection

• SDH Synchronization Clocks
• Synchronous Ethernet Clock

• Service configuration: supports end-to-end service configuration and automatic deployment of alarm management.
• Service commissioning: supports the one-click service connectivity test, one-click service performance test, and automatic test without any instrument.
• Routine maintenance: supports performance statistics and monitoring and E-Line and E-LAN service path visualization.
• Fault diagnosis: supports intelligent fault locating, IP ping initiation and response, and service loopback detection.

• -48 V/-60 V DC power input
• 110 V/220 V AC power input

• Long-time operation: -5°C to +50°C
• Short-time operation: -10°C to +55°C

• Long-time operation: 5%-85%
• Short-time operation: 5%-95%