T1 Echo Cancellers - 1U, 19inch Version with Telnet - Orion's 64ms and 128ms echo cancellers uni directional and bi directional. Support PRI ISDN, Euro ISDN, C7, SS7, R2 CAS signaling protocols. E1 echo canceller is also available.

T1 Echo Cancellers
1U, 19 inch Version with Telnet

Orion's latest compact, robust and cost effective T1 Echo Canceller solution in 19 inch, 1U high (44mm height) chassis (accommodates 1, T1 Echo Canceller with telnet, per chassis). Echo cancellation on each channel is 64ms. Bidirectional / 128ms. Unidirectional echo tails - user selectable. E1 Echo Cancellers are also offered and available.

Echo cancellation and voice quality enhancement solutions for the following network situations:

Wireline Wireless Satellite	International Gateway IP Gateway
The T1 Echo Canceller solutions are ideally suited 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 T1 circuit by-pass in the event of power supply failure).

T1 Echo Canceller (1U) - Data Sheet (PDF 128KB)
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, in a 19 inch, 1U high (44mm height) chassis and accommodates 1, E1 echo canceller with telnet.

Type of T1 Echo Canceller offered
1U (44mm high), 19 inch Chassis Version with Telnet

T1 Echo Canceller solution in 19 inch, 1U high (44mm height) chassis and accommodates 1, T1 echo canceller with telnet, per shelf. Echo cancellation on each channel is 64ms Bidirectional / 128ms. Unidirectional echo tails - user selectable. T1 Inputs and Outputs are balanced 100 Ohms, RJ-45.

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 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 T1 Echo Canceller supports 2100 Hz fax / analog data modem tone detection and echo canceller disabling on all channels.

T1 Echo Canceller - Highlights

Compact T1 echo canceller solution in 19 inch, 1U high (44mm height) chassis and accommodates 1, T1 echo canceller with telnet, per shelf (chassis).
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:
- 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)
- D4 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
T1 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 24-channel voice echo canceller

Signaling Support

The T1 echo cancellers support 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)
D4 Robbed Bit Signaling.
All signaling options are User Selectable / User Programmable.
Allow digital data transmission on user-selected time-slots.

Applications for the T1 Echo Cancellers

Wireless: GSM, CDMA, TDMA, PCS and Cellular Base Stations
Digital Circuit Multiplication Equipment (DCME) : Satellite Communications and Multiplexers
PCS, cellular, mobile and digital cordless wireless systems
PBX and central office systems
Datacomm: Voice over Frame Relay, Voice over ATM and Voice over Internet
Voice over ATM, Frame Relay or packet switching systems and fax transmissions
Central Office and PBX: Network Trunks, Echo Canceller Pool, Common Equipment and Audio Conferencing Bridges
Voice over Datacomm including Voice over Internet (VoIP), Voice over ATM (VoATM) and Voice over Frame Relay (VoFR)

Datacomm Applications

Voice over Frame Relay
Voice over ATM
Voice over Internet / LAN

Central Office and PBX Applications

Network Trunks
Echo Canceller Pool
Common Equipment
Audio Conferencing Bridges

Voice Over ATM Applications

A multi-channel echo canceller resource or pool is shared among many channels to reduce cost
Echo cancellation is done at a DS0 level

Satellite Communications Applications

Digital Circuit Multiplication Equipment (DCME)

Wireless Applications

GSM, CDMA, TDMA
Digital Cordless and Cellular Basestations

Voice Over Frame Relay, ATM Applications

Frame Relay and ATM routers and switches introduce large, variable and unpredictable delays
Echoes from the Public Switched Telephone Network (PSTN) in combination with the delays from Frame Relay and ATM equipment yield objectionable speech quality

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)