Nera Evolution Series Technical Description page 6

5.2.9. Receiver Threshold 75xE1 - 28 MHz BW......................................................................................30
5.2.10. Maximum input level......................................................................................................................30
5.2.11. RX oscillator frequency tolerance ..................................................................................................30
5.2.12. Noise Figure ...................................................................................................................................30
5.3. INTERFERENCE SENSITIVITY ...........................................................................................................31
5.3.1. Co-channel interference sensitivity ................................................................................................31
5.3.2. Adjacent channel interference sensitivity .......................................................................................31
5.4. SYSTEM PERFORMANCE....................................................................................................................32
5.4.1. System Gain....................................................................................................................................32
5.4.2. Equipment background BER (Residual BER) ................................................................................32
5.4.3. System Signature ............................................................................................................................32
5.5. DIPLEXER AND ANTENNA INTERFACE..........................................................................................33
5.5.1. General description.........................................................................................................................33
5.5.2. RF-Coupler .....................................................................................................................................33
5.5.3. Interface to Antenna feeder system - non integrated antennas.......................................................33
5.6. IFU-ODU INTERFACE ..........................................................................................................................34
5.6.1. Cable interface characteristics ........................................................................................................34
5.6.2. Cable characteristics .......................................................................................................................34
5.7. RADIO PROTECTION SWITCHING (RPS) .........................................................................................35
5.7.1. Specification of the protection switching system ...........................................................................35
5.7.2. Switching criteria and switching operation time, Rx ......................................................................35
5.7.3. Switching criteria and switching operation time, Tx ......................................................................35
6. BASEBAND CHARACTERISTICS...............................................................................................................36
6.1. USER INTERFACES ..............................................................................................................................36
6.2. ETHERNET FUNCTIONALITY ............................................................................................................36
6.2.1. General ...........................................................................................................................................36
6.2.2. Ethernet Traffic Mapping ...............................................................................................................36
6.2.3. Flow Control...................................................................................................................................36
6.2.4. MAC learning .................................................................................................................................36
6.2.5. Link-Loss Failure pass through on the Ethernet port......................................................................36
6.3. TRANSMISSION INTERFACES ...........................................................................................................37
6.3.1. Interface characteristics 1.5 Mbit/s .................................................................................................37
6.3.2. Interface characteristics 2 Mbit/s ....................................................................................................37
6.3.3. Interface characteristics 155 Mbit/s electrical ................................................................................37
6.3.4. Interface characteristics 155 Mbit/s optical - Intermediate Reach ..................................................37
6.3.5. Interface characteristics 155 Mbit/s optical - Long Reach 1300nm................................................38
6.3.6. Interface characteristics 155 Mbit/s optical - Long Reach 1500nm................................................38
6.3.7. Interface characteristics Ethernet - 10/100 BASE-TX: ..................................................................38
6.4. AUXILIARY INTERFACES...................................................................................................................39
6.4.1. 64 kb/s channel characteristics .......................................................................................................39
6.4.2. Service telephone/Orderwire interfaces ..........................................................................................39
6.4.3. Alarm and Control Unit ..................................................................................................................40
7. MANAGEMENT SYSTEM CHARACTERISTICS .....................................................................................41
7.1. GENERAL ...............................................................................................................................................41
7.1.1. Event logging..................................................................................................................................41
7.1.2. Monitoring of system performance.................................................................................................41
7.1.3. Security management......................................................................................................................42
7.2. ECC (EMBEDDED COMMUNICATION CHANNEL).........................................................................43
7.2.1. IP Routing.......................................................................................................................................43
7.2.2. Embedded SNMP agent..................................................................................................................43
7.3. INTERFACES TO THE SUPERVISION SYSTEM ...............................................................................43
7.3.1. General ...........................................................................................................................................43
7.3.2. LEDs...............................................................................................................................................43
8. REFERENCES .................................................................................................................................................44
9. TERMINOLOGY.............................................................................................................................................46
4 Evolution Series - XPAND NGP\00329 Rev. C 23-06-2006