▶ Fox-622
 
 
   
 
 FOX-622V synchronous optical transmission equipment comprises 622M COT, RT and 155M POI. 622M COT and RT equipments receive tributary signal as DS1E, E2, DS3 and STM-1 from central office and base station to multiplex STM-4 synchronous digital signal and transmit it to the counterpart equipment. By performing opposite processing in the same way as well, PTP and ring topology can be implemented.
 
 
• Provides for a variety of line capacity services, Network architectures and Technologies.
 - 622M COT : 4 STM-1, 12 DS3, 48 E2, 147 E1
 - 622M RT : 2 STM-1, 6 DS3, 24 E2, 63 E1
 - 155M : 3 DS3, 12 E2, 63 E1

• Provide versatile network configuration ( RING, PTP )
• Compact Size - 19” standard Rack type
• Provide for a variety subscriber line (E1, E2, DS3, STM-1)

• N:1 or 1+1 channel protection
 - 622M COT - E1 (7:1), E2 (1:1), DS3 (1:1), STM-1 (1+1)
 - 622M RT - E1 (3:1), E2 (1:1), DS3 (1:1), STM-1 (1+1)
 - 155M - E1 (3:1), E2 (1:1), DS3 (1:1)

• Various Optical Interface Unit
 - OTRU-A : STM-4 Optical Interface
 - OTRU-B : STM-1 Optical Interface
 - Common usable Unit between COT / RT

• Power Consumption
 - 622M COT : 150 Watt
 - 155M/622 RT : 120 Watt

• Multi-EMS monitoring, management and statistic statement for the 128 nodes of 622M and 155M system
 - GUI mode EMS (“Point & Click”)
 - TCP/IP LAN
 - RS-232C Serial Port
 - TL-1 Format
 - Usable Server PC
 - OS : Windows 2000/NT

• Remote Network Management and Software Upgrade
• No effect for a service with extension or reduction
• Dual Power
 
 
[COT]
System Dimension : 18(H) x 60(D) x 48(W)cm
19” standard Rack type
10 Shelf / 2.2m Rack
Input Power : -48 VDC
Power Consumption : 150 W
Module Power
Front and Rear Access & Cabling type

[RT]
System Dimension : 14(H) x 60(D) x 48(W)cm
19” standard Rack type
13 Shelf / 2.2m Rack
Input Power : -48 VDC
Power Consumption : 120 W
Dual Power (Module Power)
Front and Rear Access & Cabling type

▶ MDCU (Front Unit)
-System concentrated processing unit with NE Software
-System monitor and control from the local and remote node
-Auto recovery the system configuration
-DCC Channel Processing
-Shelf Alarm LED - Critical, Major, Minor
-Operation Terminal Interface (LAN connector)

▶ MDIOU (Rear Unit)
-Operation Terminal Interface (RS232C connector)
-PDP Power/Alarm Connector

▶ ECIU (Front Unit)
- External clock Input
- Dual Unit

▶ ECIOU (Rear Unit)
- External Clock Input (Primary, Secondary)

▶ OTRU (Front Unit)
- Optical to Electrical Conversion
- STM-1 or STM-4 Multiplexing
- Clock Synchronization
- Wavelength : 1310nm or 1550nm
- Optical Span Length ( 15km, 40km, 60km : Swap the Optic Unit )
- Connector : SC
- ITU-T G.958 standard
- Swap the OTRU to upgrade STM-1 to STM-4

▶ STM1U(Synchronous Transport Module level-1 Unit)
- Optical to Electrical Conversion
- 1 x STM-1 channel per unit
- Connector : SC
- ITU-T G.958 standard
- Conversion STM-1 3 x AU3 or 1 x AU4

▶ DS1EU (E1 Mapper Unit)
- 21 E1 channel per unit
- TU12 Format

▶ DS2EU (E2 Mapper Unit)
- 12 E2 channel per unit (622M)
- 4 E2 channel per unit (155M)
- AU3/AU4 Format

▶ DS3U (DS3 Mapper Unit)
- 3 channel per unit
- AU3/AU4 Format

• Optic Line Protection : 1+1 unit protection
• E1 Unit Protection
- 622M COT - 7:1
- 622M RT - 3:1
- 155M - 3:1
• E2/DS3 Unit Protection - 1:1
• STM-1 Unit Protection - 1+1

• Selectable Clock Source
- External Clock Input (Primary, Secondary)
- 2.048Mbps External Clock
- Inter Synchronization
- Line / Loop Synchronization
• Clock Switching
- External Clock : Protection Clock by a Primary and Secondary
- External Clock error occurred : Hot swap to Holdover mode
- External Clock error released : Released to the Clock
• Clock Setting by the software

• CIT : GUI (Graphic User Interface)
• Network Management
- Network Plan, Provisioning, Alarm Monitoring
- Remote monitoring and controlling through DCC (Data Communication Channel)
- Accessing EMS
  Access TL1 through TCP/IP(Telnet) for remote EMS
  Remote node network management through TCP/IP or SNMP
  7 Layer OSI stack for LAN and DCC
- Critical, Major, Minor for alarm indicate
- Alarm descript information
- Cross-Connection state

• Network Performance Monitoring
- Collecting the signal path data
- Auto upgrade the performance Data
- Analysis the performance monitoring, Inventory Management
- Unit name, Production number, Unit Revision number, A/S history
- Login history : Login system from central and remote node

• Backup and Recovery the network configuration
- Backup and recovery the Network and System configuration, Provision, Performance
state to HDD
- Download the system Element
Network Element
System Element
• Security Management (User level)
• Print an user format report