Product specifications

Chapter 1 Introduction
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1.3 Product Features
 Channel Capacity :4, 8, 12, 16 E1, T1, or data communication service
 Tributary card types : E1 interface (75ohms or 120ohms)
T1 interface (100 ohms)
Datacom interface (V.35/ RS-530/ X.21)
Voice interface (FXO or FXS)
 Optical module :Auto Laser shutdown, hot swappable 1+1 protection
 Alarm relay contact : major and minor alarms
(audible and visible alarm output)
 Supports SNMP management, TFTP remote software upgrade
 Performance monitor : E1/T1 line performance CV, CRC, ES, SES.
 Configurations can be backed up to non-volatile memory.
 Provides the optical line local loopback and remote loopback function.
 Low speed (E1,T1, datacom) local and remote loopback function
 OE module : Class 1 Laser product. Safety Standard IEC 825 compliant.
 Management interface : LCD / push button keys, VT-100 (RS-232 RJ-45), SNMP (Ethernet RJ-45)
 External clock : E1 external TTL clock or PCM data Input through RJ-45 connector
 10/100M Ethernet : 2 x Ethernet ports (100M full rate total)
 1 RS-232 data port : clear asynchronous channel
 External alarm : 2 sets of external alarm detection
1.4 Technical Specifications
1.4.1 Optical Interface
 Optical Source : MLM 1310/1550nm
 Wavelength : 1310/1550 ± 50nm
 System Gain : 19～30dB
 Fiber connector types : SC,FC, or ST type
 Bi-directional Fiber Optical Module (WDM Option on SC type)
1.4.2 E1S module
 Channel Capacity : 4 channels per module
 Bit Rate : 2.048Mbps ± 50ppm
 Line Code : HDB3 / AMI
 Frame Format : Unframed (clear channel)
 Electrical Interface : Compliant with international standards ITU-T G.703
 Jitter Tolerance : Compliant with ITU-T G.823
 Jitter Transfer : Compliant with ITU-T G.742, G.823
 Line impedance :120Ω (DB25 Wire Wrap or RJ-45) or 75Ω (BNC)
 Surge protection : Compliant with (or better than) IEC 1000-4-5 class 2 or FCC part 68