Quad 2 E1
Quad 2 E1
Product Features | Overview | Technical Specifications
Narrowband Echo Cancellation Platform Ditech Networks’ Quad 2 E1 offers the industry’s leading hybrid echo tail coverage of up to 192 ms, giving service providers guaranteed echo coverage for all types of networks: wireline, wireless, VoIP, and international. In addition to cancelling hybrid echo, unidirectionally or bidirectionally for added echo elimination, the Quad 2 E1 offers optional acoustic echo control and noise reduction. Utilizing the latest in digital signal processing technology, the Quad 2 E1’s compact design allows support for up to 2,400 voice channels per shelf. |
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| Product Features |
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| Applications |
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High Density Echo Cancellation
The Quad 2 E1 delivers high-capacity echo cancellation while providing voice quality features that include
Adaptive Noise Reduction (ANR), unidirectional Acoustic Echo Control (AEC), and network voice level controls.
Other innovative features include local or remote in-service software upgrading, and Reflectometry™ for
real-time characterization and performance monitoring of each channel in a network.
Reflectometry combines advanced software algorithms with powerful DSP engines to detect subtle changes in network conditions and measure and report anomalies, allowing service providers to remotely identify and proactively address voice quality problems. Remote provisioning, control, and monitoring of the Quad 2 E1 is easy and efficient with Ditech’s WinMAP™ software for terminal access and NetConsul™ EMS software for system element management.
Enterprise Solution
When installed in the 4sa Enterprise shelf, the Quad 2 E1 provides a cost-effective solution for Enterprise
or Remote Office applications, providing echo cancellation for between 1 and 4 E1s in a compact, tabletop or
rack-mountable, AC- or DC-powerable chassis with RJ-48, wire-wrap, or BNC connectors.
Carrier Solution
When installed in the 80sa Carrier shelf, the Quad 2 E1 provides a high-density narrowband echo cancellation
solution that easily scales from 1 to 80 E1s per rack-mount shelf assembly. The 80sa Carrier shelf is available
with either BNC or wire-wrap connector options and is engineered with dual redundant –48 VDC power and forced-air
cooling for central office deployments. Up to 6 Carrier shelves can fit in a 2200 mm rack, for up to 480 E1s per rack.
| Carrier Shelf (80sa High Density) | |
| 20 cards, 80 E1s maximum per shelf 4 BNC shelves maximum per 2200 mm rack (320 E1s) 6 Wire Wrap shelves maximum per 2200 mm rack (480 E1s) Mounts for 19″/23″ ANSI/EIA, 600 mm ETSI racks |
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| Power Consumption | 11W maximum per card, <95mW per DS0 Fully loaded shelf: 220W 4.4A @ –48 VDC Fan assembly: 18W (per shelf) |
| Input Voltage | Dual A&B –48 VDC: –36 to –60 VDC |
| Dimensions (H x W x D) | Quad 2 E1 card: 241 x 21 x 229 mm BNC shelf (15 U): 375 x 440 x 340 mm Wire Wrap shelf (10 U): 250 x 440 x 310 mm Fan assembly (2.4 U): 59 x 440 x 310 mm |
| Weight | Quad 2 E1 card: 0.54 kg Empty BNC shelf: 10.0 kg Empty Wire Wrap shelf: 8.6 kg |
| Enterprise Shelf (4sa) | |
| 1 card, 4 E1s maximum per shelf Mounts for 19″ or 23″ ANSI/EIA racks Rubber feet for tabletop mounting |
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| Power Consumption | 11W maximum per card, <95mW per DS0 Fully loaded shelf: 11W, 0.22A @ –48 VDC |
| Input Voltage | –48 VDC: –36 to –60 VDC 110/240 VAC, 50/60 Hz autosensing, universal |
| Dimensions (H x W x D) | Quad 2 E1 card: 241 x 21 x 229 mm BNC shelf (1.8 U): 44 x 440 x 240 mm RJ-48C/Wire Wrap shelf: 44 (1.8 U) x 440 x 240 mm |
| Weight | Quad 2 E1 card: 0.54 kg Empty BNC shelf: 0.9 kg Empty RJ-48C/Wire Wrap shelf: 0.9 kg |
Technical Specifications
Hybrid Echo Cancellation |
Level Control |
Voice Quality Options |
Monitoring |
Network Interface |
Synchronization |
Terminal Control |
Front Panel Control |
Redundancy |
Environmental |
Reliability |
Regulatory Information
| HYBRID ECHO CANCELLATION | |
| ERLE (Echo Return Loss Enhancement) | >35 dB (with 6dB ERL) at –10 dBm0 input >65 dB with NLP enabled |
| ERL (Echo Return Loss) | Selectable Threshold Level: 0, 3, 6 dB |
| Comfort Noise | Per DS0 |
| Convergence Time | <50ms for 30 dB or better (ERL + ERLE) |
| Tail Circuit Delay | Selectable: 24, 32, 48, 64, 96, 128, 160, 192 ms |
| Tone Disablers | ITU-T G.164, G.165 |
| Re-Enable Modes | Low Energy, End of Call |
| LEVEL CONTROL | |
| High Level Compensation (HLC) Automatic Level Control (ALC) G.169 Fixed Gain/Loss (FGL) |
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| VOICE QUALITY OPTIONS | |
| Unidirectional Acoustic Echo Control (AEC) Adaptive Noise Reduction (ANR) Unidirectional Adaptive Listener Enhancement (ALE) |
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| MONITORING | |
| Reflectometry | ERL, ERLE, Max Delay, Send & Receive Levels Actual measurements per 64Kbps channel |
| Alarm Monitoring | Local, distant, AIS, multiframe, distant multiframe Dry contacts for Alarms and E2A Interface |
| Performance Monitoring | Referencing ANSI T1.231-1977 |
| NETWORK INTERFACE | |
| Line Rate | CEPT 2.048 Mbps 30/31 channel modes |
| Framing Format | Per ITU-T G.704: CAS or CAS + CRC-4 |
| Line Encoding | HDB3 per ITU-T G.703, G.704 |
| PCM Encoding | A-law per ITU-T G.711 (Segmented 13) |
| Jitter Tolerance | Per ITU-T G.823 |
| Signaling Protocols | CAS, C5, CCS, Q50 (AB/CD) |
| Line Impedance (Card Types) | 75 Ohm nominal, unbalanced for BNC 120 Ohm balanced for Wire Wrap |
| Maximum Cable Length | 200 m using 75 Ohm cable 200 m using 120 Ohm cable |
| SYNCHRONIZATION | |
| Through-timing | |
| TERMINAL CONTROL | |
| Serial Interface | 3 V.24 (RJ-11) ports (1 on faceplate, 2 on backplane) Data transfer selectable up to 19200 baud |
| Local and Remote Provisioning | Local: CLI, WinMAP™ GUI Multisite: NetConsul™ EMS |
| FRONT PANEL CONTROL | |
| Alarm Indicators | LEDs for power/logon, ACO, and urgent and deferred facility and equipment alarms |
| REDUNDANCY | |
| Power Input | Carrier shelf: A&B fused inputs for failsafe source redundancy |
| Protection | Metallic bypass relays for failsafe operation Fans alarmed; no single fan critical |
| ENVIRONMENTAL | |
| Operational | Temperature: 5° to 40°C Short Term: –5° to 55°C Humidity: 5 to 90%, non-condensing |
| Non Operational | Temperature: –40° to 70°C Humidity: 5 to 95%, non-condensing |
| Heat Output | Fully loaded Carrier shelf: 750 BTU/hour |
| RELIABILITY | |
| MTBF Per Telcordia SR-332 Issue 1 May 2001 | Quad 2 E1 card: 53 years at 40°C |
| REGULATORY INFORMATION | |
| UL 60950 / EN 60950 CAN/CSA-C22.2 EN 300 386-1 and -2 ETS 300 132-2 / EN 61000 EN 55002 (CISPR 22) Class B CE Mark NEBS Level 3 per Telcordia SR-3580 RoHS 5/6 |
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