| Bhumika offers a cost
effective T1 echo canceller solution in 19 inch, 6U high chassis
(accommodates
up to 32, E1 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.
Bhumika offer 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.
- Also available E1 Echo
Cancellers
with 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 (upto 10 E1 echo
cancellers per chassis).
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.
T1 Echo
Canceller - Highlights
- Provides voice echo cancellation
of up to 64ms Bi-Directional / 128ms Uni-Directional - User
Selectable / User Programmable.
- 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.
- 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. 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
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
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