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T1 Echo Cancellers - upto 32 T1 Cancellers
per Chassis
Valiant offers a cost effective T1 echo canceller solution
in 19 inch, 6U high chassis (accomodates up to 32, T1 echo cancellers per shelf). Echo
cancellation on each channel is 64ms. bi-directional /
128ms. uni-directional echo tail. E1 echo canceller are also offered and available.
Valiant offers echo cancellation and voice quality
enhancement solutions for the following network situations:
- Wireline
- Wireless
- Satellite
- International Gateway
- IP Gateway
The echo canceller solutions are ideal for
long distance telephony, GSM, CDMA, TDMA, VoIP, satellite and radio communication
applications.
Type of T1 Echo Canceller offered - High Density Version - upto 32 T1
Cancellers per Chassis
T1 echo canceller: 64ms Bi-directional and 128ms.
Uni-Directional - User Selectable. Our T1 echo canceller is a fully integrated 24
channel echo canceller that cancels echo up to 64ms. bi-directional / 128ms.
uni-directional - User Selectable. T1 Inputs and Outputs are balanced 100 Ohms, RJ-45 |
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T1 Echo Canceller - Highlights
- Provides voice echo cancellation of up to 128ms
Uni-Directional.
- Meets ITU-T G.164, G.165, G.168 (2000 / 2002) requirements
for echo cancellation.
- Signaling protocols supported:
- 24B (24 Voice Channels) with out-of-band signaling (C7 / SS7 Signaling on any user
selected time-slot)
- 23B+D, PRI ISDN (23 Voice Channels+D Signaling Channel),
- Robbed Bit Signaling.
- SLC-96 Signaling.
- All signaling options are User Selectable / User Configurable.
- 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
- Redundant Power Supply (Optional)
- T1 link by-pass on power failure. This feature helps to
maintain the link integrity even in the event of power failure
- Automatic T1 link by-pass upon removal of power supply
- 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 24-channel voice echo canceller
per T1 port.
Signaling Support
The T1 echo cancellers supports the following
signaling protocols supported: 24B (24 Voice Channels) with out-of-band signaling (C7 /
SS7 Signaling on any user selected time-slot) 23B+D, PRI ISDN (23 Voice Channels+D
Signaling Channel), Robbed Bit Signaling and SLC-96 Signaling. All signaling options are
User Selectable / User Programmable. Allows digital data transmission on user-selected
time-slots.
Fault Recovery
The echo canceller equipment offers fault
recovery feature. It offers automatic by-pass upon power-supply failure (i.e. it offers T1
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)
Redundancy
The echo canceller is equipped to offer
redundant power supply (optional).
Unique T1 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 T1 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 T1 connections on the echo-canceller
card.
USER PROGRAMMABLE SIGNALING OPTION: Our T1
echo-cancellers provide User Programmable T1 signaling options whereby the user may use
our T1 echo-cancellers just as efficiently over a wide spectrum of T1 signaling options.
The T1 signaling protocols that we support are 24B (24 Voice Channels) with out-of-band
signaling (C7 / SS7 Signaling on any user selected time-slot) 23B+D, PRI ISDN (23 Voice
Channels+D Signaling Channel), Robbed Bit Signaling. 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 T1 echo canceller supports 2100 Hz fax / analog data
modem tone detection and echo canceller disabling on all channels.
Applications for
the T1 Echo Cancellers
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Web Site: http://www.valiantcom.com
VCL-EC™ is a trademark of Valiant
Communications Limited.
Please click
here to read our Notices of Copyrights and Trademarks
© Valiant Communications Limited, 1998-2008. All rights
reserved. |
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