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Echo cancellation and voice
quality enhancement solutions for the following network
situations:
- Wireline
- Wireless
- Satellite
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- International Gateway
- IP Gateway
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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). |
Type of E1 Echo Canceller offered
- 1U (44mm high),
19 inch Chassis
Version with Telnet
E1 Echo Canceller solution in 19 inch, 1U high (44mm
height) chassis and accommodates 1, E1 Echo Canceller with telnet, per shelf. Echo
cancellation on each channel is 64ms Bidirectional /
128ms. Unidirectional echo tails - user
selectable. E1 Inputs and Outputs
are balanced 120 Ohms, RJ-45.
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
may 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.
E1 Echo Canceller - Highlights
- Compact E1 Echo Canceller solution in 19 inch, 1U high (44mm
height) chassis and accommodates 1, E1 Echo Canceller with
telnet, per shelf
- Provides voice echo cancellation
of up to 64ms Bidirectional / 128ms Unidirectional - User
Selectable / User Programmable
- Meets ITU-T G.164, G.165, G.168 (2000 / 2002) requirements
for echo cancellation.
- 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
- The Echo Canceller supports fax /
modem G.164 and G.165 (2100 Hz) tone disable
- Carrier-grade voice quality per
AT&T Voice Quality Assessment Lab
- Remote access through telnet over LAN / TCP-IP link
(10/100BaseT)
- Local access through COM port (RS232 serial port)
- Easy to use text based CLI commands for management and
configuration
- Adjustable gain/loss settings on all channels. Provides the
user the flexibility to adjust and optimize the voice, transmit and receive levels
- Non-Linear Processor with Comfort Noise Insertion
- E1 link by-pass on power failure. This
feature helps to maintain the link integrity even in the event of power failure
- Option for user to select voice echo cancellation or
digital-data transmission selectively on each time-slot for selective echo cancellation.
This feature allows the user to use selected time-slots for data transmission to enable
digital data / CCS signaling transmission
- Transmission (data mode), while keeping the echo
cancellation "ON" on the remaining time-slots (voice mode), on which echo is
required to be cancelled
- Ensure echo canceller maintains excellent performance at all
times in presence of tones or signals including DTMF tones
- Fully integrated independent 30-channel voice echo canceller
Signaling Support
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
Applications for
the E1 Echo Cancellers
Datacomm Applications
- Voice over Frame Relay
- Voice over ATM
- Voice over Internet / LAN
Central Office and PBX Applications
Voice Over ATM
Applications
Satellite
Communications Applications
- Digital Circuit Multiplication Equipment (DCME)
Wireless
Applications
Voice Over Frame
Relay, ATM Applications
Fault Recovery
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
- Remote access through telnet over LAN / TCP-IP link
(10/100BaseT)
- Local access through COM port
(RS232 serial port)
Related Links
Others
Links
Technical specifications are subject to change without
notice.
All brand names and trademarks are the property of their respective owners.
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