IDM-NT202 User's Manual
CONTENTS
2.4 RJ45 jack wiring and pin assignments for telephone
2.5 RJ45 jack wiring and pin assignments for Ethernet
6. Equipmnent Common troubleshooting
1 Brief
IDM-NT202 is a fixed configuration. It transmits 2 channels of FXO/FXS signal and 2 channels of 10/100M Ethernet signal over a pair of fibers (or one single fiber).
2 Panels
IDM-NT202 front panel
IDM-NT202 rear panel
2.4 RJ45 jack wiring and pin assignments for telephone
2.5 RJ45 jack wiring and pin assignments for Ethernet
2.5.1 CAT-5 Straight-through Cable wiring
2.5.2 CAT-5 Cross-over Cable Pin Assignments
2.5.3 Pin assignments
Fig.3-1 IDM-NT202 typical application
4 Interface specification
4.1 FXO/FXS interface
v Physical connector: RJ45
v Impedance: 200Ω+560Ω//0.1μF
v Audio frequency range: 300Hz―3400Hz
v Compression ratio: Law A in ITU-T G.711
4.2 Ethernet interface
v Physical connector: RJ-45
v Rate: 10/100M half or full duplex.
v Compliance: IEEE-802.3u.
v Mode: 10/100Mbps self-adaptation
v Physical connector: FC/SC connector
v Rate: 155Mbps±50ppm
v Wavelength: 1310nm/1550nm
v Optical output power: -4～-12dBm
v Sensitivity: better than -34dBm
v Receiver dynamic range: 34dBm
In order to ensure access to and use of the personal safety of laser engineering, operating light equipment must comply with the following rules
l Take care of and clean fiber, optical fiber connector is not received before, you should wear a protective cap to prevent physical damage and contamination
l Maintenance and operations staff must be adequately trained
l In the light is not turned off before, not in front of the eyes of the fiber cross-sectional view
l This series belongs to the communications industry the DC input voltage voltage (+5 VDC)
l Before testing all optical ports, to ensure accurate test results, all the optical connectors must be clean
l TX connected to peer end devices RX, RX connected to peer end devices TX, the fiber optic connector into the optical interface connector on the device. Inserted into the plug stops
l Ethernet connection
NET1 and NET2 equipment is one to one. Note that when the connection interface corresponds
l Telephone line connection
Note central office equipment is connected to a telephone line at the telephone exchange, Remote device connected to the user's phone, Telephone service interface PHONE, be careful not to pick the wrong
6. Equipment Common troubleshooting
IDM-NT202 optical alarm light: NOP light indicate equipment don’t reception optical signal, LOF light indicate optical path out-of-frame, RAI light indicate another site equipment alarm. According to the alarm indicator light alarm indicator can quickly optical path fault judgement.
l Check the fiber contact with the equipment are well, Optical fiber plugs on both ends and devices to reconnect mouth in order to protect the connection is good
l Optical fiber to reconnect after warning light still have the alarm, need to run out of power meter measuring optical fiber ends the sending power and receiving power of the plate; If send power normal end plate, and the receiving optical power is unusual,thenis fiber; If the plate shine power is very low, and can be judged to be plate problems
l Optical plate sending power after normal use the tail fiber to this end equipment of light mouth, from the ring; If the warning light board since the ring is still warning lights, then the problem is the light board, If the warning light goes out after the ring you need to use the same method to test for the end of the light board. If the light on the end plate from the ring alarm lights are off, you can determine the fiber is problematic
l When two devices are connected via a single fiber: First ends of the optical module is different, one end is 1310nm optical module, the other end is 1550nm optical module, also the transmission distance is different for example 20KM, 40KM, 60KM etc. When the two ends communicate with each other to ensure the end of the first identified as 1310nm, and the other end is identified as 1550nm, and secondly to ensure the same distance from both ends of the work identified in order to communicate
l First check the interface contacts are good and the network cable is connected to the Ethernet interface
l Check the cable: Check the pressure line RJ-45 meets the requirements of Ethernet cable, Check the cable line sequence is correct, Connected with the PC using a crossover cable, connected to the Ethernet switch using the straight-through
l Check the configuration on both sides of the PC is correct, whether in the same network segment, Correct preparation of both ends of the IP address, Working Group, Gateway etc.
l Check the cable is connected to the telephone service interface PHONE
l Check the configuration of the device itself telephone line and the telephone service used to qualify whether the correspondence
l Equipment and cables connected to a corresponding interface connector is wired correctly
l When determining equipment business wiring accurate, please check the device Bureau remote connection is normal, central office equipment connected switches, remote devices connected telephones
l Finally, check the phone can work
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