GL Communications unveiled an E1 analyzer software v5.24 with new applications and enhancements for the analysis and emulation capabilities for voiceband analysis and signaling protocol analysis. The additions now include a set of new protocol analyzers: MAPS-SS7, MAPS-SS7/ISUP conformance testing, MAPS-ISDN, GSM A interface emulation, GSM Abis interface emulation, TRAU Tx/Rx testing, network surveyor and frame relay emulation.