While opening 2M circuit, there is a need to judge if the errors and alert index are complied with opening conditions; while dealing with the fault location，there is a need to judge if there is any problem existing in line equipment.
BER-1580 Data Transmission Analyzer developed by DADI Telecom is used by operator in 2M equipment maintenance, troubleshooting and other high-end applications and frame relay service test for the key customers. It can be used for BER testing from 50b/s to 2048kb/s as well as monitoring 2M circuit online, which is the necessary tool for daily network equipment installation, troubleshooting and maintenance. It supports G.703, V.24/RS232, V.35, V.36/RS449, X.21, EIA－530/530A, RS485/RS422 interfaces. BER-1580 also supports 2M jitter send/receive testing, 2M Synchronous Clock testing and frame relay testing. It also supports RJ45 network interface complete TCP/IP, and updating online. Its characteristic remote monitoring function makes it ideal for users to easily perform real-time monitoring to the test unit through certain software under Windows Chinese environment.
Leased line circuit fault interface diagnosis—E1 ping testing
2M Circuit Opening- E1 Off-line loopback testing
2M Circuit Opening—E1 offline end-to-end testing
Network maintenance—E1 online testing
Network maintenance—E1 pass through test
Network maintenance—V series interfaces testing
Signal quality testing—E1/T1 pulse template
Signal quality testing — jitter testing
Test occupied channel—Voice Monitoring
Test equipment A/D transfer ability—Audio Testing
Verify Ethernet Connectivity—Ping testing
E1 interface testing
? l Defects and abnormal: Out of service or in-service testing，error characteristics testing
? l Loop delay: Precision reaches 1us
? l Switch time: The time of switching from the main channel to standby channel
? l Audio testing: Test if there is problem, such as distortion, etc, existing in PCM or SPC while stimulating the conversion between voice signal and digital signal
? l Voice monitoring: Scan channel to confirm the busy of 64Kchannel, monitoring line which is being used
? l Pulse mask: Test if the E1 waveform satisfy G.703 standard
? l E1 jitter Rx/Tx testing: E1 signal jitter testing, it can perform jitter on send end
Ethernet testing
? l PING: judge connectivity
V Series Interfaces Testing
? l Defects and abnormal: Out of service or in-service testing, error characteristics testing
? l PING: PING router, PPP/HDLC/FR protocol
T1 testing
? l Defects and abnormal: Out of service or in-service testing, error characteristics testing
? l Pulse mask: Test if the E1 waveform satisfy G.703 standard
