... . It fulfils E1 in-service monitoring as well as BER testing from 50b/s to 2048kb/s with supported interfaces of ... 35, V.36/RS449, EIA-530/530A,-X.21 interface BER testing- Performance analysis according to ITU-T recommendationPING Test- IP address ... setting- Ethernet connectivity testingFeatures:-Color TFT LCD-Comprehensive E1 circuit testing-Various errors insertion and detection, such as bit, Code, ...