Valiant offers echo cancellation and voice quality enhancement solutions for the following network situations:
The E1 echo canceller solutions are ideal for long distance telephony, GSM, CDMA, TDMA, VoIP, satellite and radio communication applications. The echo canceller equipment offers fault recovery feature. It offers automatic by-pass upon power-supply failure (i.e. it offers E1 circuit by-pass in the event of power supply failure).
Features and Highlights
E1 Echo Canceller - Highlights
The echo canceller equipment offers fault recovery feature. It offers automatic by-pass upon power-supply failure (i.e. it offers E1 circuit by-pass in the event of power supply failure).
Remote Monitoring and Control
Unique E1 Echo Canceller Features:
USER PROGRAMMABLE TAIL-SIDE: Echo cancellers are always required to be installed, such that, the tail-side of the echo-canceller always faces towards the source of the echo. Our E1 echo-cancellers have a User Configurable tail-side so that the USER may remotely change the direction of the tail-side of the echo canceller - without having to physically change the E1 connections on the echo-canceller card.
USER PROGRAMMABLE SIGNALING OPTION: The E1 echo cancellers supports the following signaling protocols: Signaling protocols supported: 30B+D PRI ISDN (Euro ISDN) signaling, 31B (31 voice channels) with out-of-band signaling, R2 CAS Signaling, SS7 signaling (on any user selected time-slot). All signaling options are User Selectable / User Programmable. Allows digital data transmission on user-selected time-slots.
USER PROGRAMMABLE DEDICATED DATA CHANNELS: The User my specify / define the dedicated data channels so that they are ALWAYS and COMPLETELY BYPASSED from the echo-cancellation circuitry - leaving those specifically assigned dedicated time-slots for digital data transmission (including video transmission).
The E1 echo canceller supports 2100 Hz fax / analog data modem tone detection and echo canceller disabling on all channels.
Applications for the E1 Echo Cancellers
Central Office and PBX Applications
Voice Over ATM Applications
Satellite Communications Applications
Voice Over Frame Relay, ATM Applications
Application # 1: Application 1 - Echo cancellers: ATM / Frame Relay
Application # 2: Application 2 - Echo cancellers: Satellite Link
Application # 3: Application 3 - Uni-directional echo canceller
Application # 4: Application 4 - Uni-directional echo canceller
Application # 5: Application 5 - Bi-directional echo canceller
Data Sheet (PDF)