DiBSYS Technologies DOCSIS 3.1 Cable Modem with Voice 4 GbE and Dual Wifi Instruction Manual

: June 12, 2024
: DiBSYS Technologies

Table of Contents

DiBSYS Technologies DOCSIS 3.1 Cable Modem with Voice 4 GbE and Dual Wifi
Features
TECHNICAL SPECIFICATIONS
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

DiBSYS Technologies DOCSIS 3.1 Cable Modem with Voice 4 GbE and Dual Wifi

Product Information

The CG445 is a state-of-the-art DOCSIS Cable Modem system designed by Dibsys Technologies. It includes a CMTS (Headend cable network) and CM (user end) to transparently transmit IP packets between the front end and the user end. The CG445 is compliant with DOCSIS 3.1 and is backward compatible with all existing DOCSIS 3.0/2.0/1.1/1.0 head-end equipment under Multiple Service Operator networks. It supports 2×2 channel bonding technology in OFDM mode and 32×8 channel bonding technology in SC-QAM mode. The CG445 provides a cost- effective solution for high-speed and bi-directional data services. It offers various models, ranging from low-end Four Giga Ethernet port models to high- end models with integrated optional WiFi features. These models can function as cable modems or even as Residential Gateways, providing excellent bandwidth to all Internet-capable devices.

Product Features

DOCSIS 3.1 Compliant; Backward compatible with DOCSIS/EuroDOCSIS 3.0
Switchable Diplexer for upstream and downstream
2x 192 MHz OFDM Downstream reception capability
4096 QAM support
32x SC-QAM Channel Downstream reception capability
1024 QAM support
2x 96 MHz OFDMA Upstream transmission capability
4096 QAM support
8x SC-QAM Channel upstream transmission capability
256 QAM support
S-CDMA and A/TDMA support
FBC (Full-Band Capture) Front End
1.2 GHz Bandwidth
4x Gigabit Ethernet Ports
1x USB3.0 Host, 1.5A limitation (Typ.) (Optional)
Wireless networking on-board:
- IEEE 802.11n 2.4GHz (3×3)
- IEEE 802.11ac Wave2 5GHz (4×4)
2x FXS Ports for Phone (Optional)
SNMP and TR-069 remote management
Dual stack IPv4 and IPv6

Technical Specifications

Connectivity Interface

RF Interface: F type female 75ohm connector port
RJ45 Ethernet port: 4x RJ45 Ethernet port 10/100/1000 Mbps
Wi-Fi: IEEE 802.11n 2.4GHz (3×3), IEEE 802.11ac Wave2 5GHz (4×4)
RJ11: 2x FXS POTS Ports (Optional)
USB: 1x USB 3.0 Host (Optional)

RF Downstream

Frequency (edge-to-edge): 108-1218 MHz, 258-1218 MHz
Input Impedance: 75 OHM
Total Input Power: 6 dB

SC-QAM Channels

No. of Channels: 32
Level Range (one channel):
- Max. North Am (64 QAM, 256 QAM): -15 to + 15 dBmV
- Euro (64 QAM): -17 to + 13 dBmV
- Euro (256 QAM): -13 to + 17dBmV
Modulation Type: 64 QAM, 256 QAM
Symbol Rate (nominal):
- North Am (64 QAM): 5.056941 Msym/s
- North Am (256 QAM): 5.360537 Msym/s
- Euro (64 QAM, 256 QAM): 6.952 Msym/s
- North Am (64 QAM/256QAM with =0.18/0.12): 6 MHz
- EURO (64 QAM/256QAM with =0.15): 8 MHz

OFDM Channels

Signal Type: OFDM
Max OFDM Channel Bandwidth: 192 MHz
Mini Contiguous-Modulated OFDM Bandwidth: 24 MHz
No. of OFDM Channels: 2
Frequency Boundary Assignment Granularity: 25 KHz
Subcarrier Spacing / FFT Duration:
- Modulation Type: QPSK, 16-QAM, 64-QAM, 128-QAM, 256-QAM,512-QAM, 1024-QAM, 2048-QAM, 4096-QAM
- Support with subcarrier granularity
- Support zero bit loaded subcarriers
Level Range (24 MHz mini. Occupied BW): Equivalent Power Spectral Density to SC-QAM of -15 to + 15 dBmV per 6 MHz

Note:
For detailed instructions on product usage, please refer to the user manual provided with the product. DOCSIS system include CMTS (Headend cable network ) and CM (user end). The main function of DOCSIS Cable Modem system is transparently transmitting IP packets between the front end and the user end.

The model CG445 product is designed with state-of-the-art DOCSIS/EuroDOCSIS 3.1, as well as backward compatible to all existing DOCSIS 3.0/2.0/1.1/1.0 head-end equipment under Multiple Service Operator networks. In OFDM mode, itsupport 22 channel bonding technology, and in SC-QAM mode, it support 328 channel bonding technology. DIBSYS cable modem provides a cost-effective solution which delivers high-speed and bi-directional data services.
The model CG445 product cover from low-end Four Giga Ethernet port model to high-end with integrated optional Wi-Fi feature, DIBSYS offer a one-stop solution to satisfy customers all kinds of demands. It not only play as cable modem feature, some models with built in Wi-Fi Router function are even capable to work as Residential Gateway in your home or small office and offer excellent bandwidth to all your Internet-capable devices.

Features

DOCSIS 3.1 Compliant; Backward compatible with DOCSIS/EuroDOCSIS 3.0
Switchable Diplexer for upstream and downstream
2x 192 MHz OFDM Downstream reception capability
4096 QAM support
32x SC-QAM (Single-Carries QAM) Channel Downstream reception capability
1024 QAM support
2x 96 MHz OFDMA Upstream transmission capability
4096 QAM support
8x SC-QAM Channel upstream transmission capability
256 QAM support
S-CDMA and A/TDMA support
FBC (Full-Band Capture) Front End
1.2 GHz Bandwidth
4x Gigabit Ethernet Ports
1x USB3.0 Host, 1.5A limitation (Typ.) (Optional)
Wireless networking on-board:
- IEEE 802.11n 2.4GHz (3×3)
- IEEE 802.11ac Wave2 5GHz (4×4)
2x FXS Ports for Phone (Optional)
SNMP and TR-069 remote management
Dual stack IPv4 and IPv6

TECHNICAL SPECIFICATIONS

Connectivity Interface

RF Interface F type female 75ohm connector port
RJ45 4x RJ45 Ethernet port 10/100/1000 Mbps
Wi-Fi IEEE 802.11n 2.4GHz 3×3
IEEE 802.11ac Wave2 5GHz 4×4
RJ11 2x FXS POTS Ports
USB 1x USB 3.0 Host (Optional)

RF Downstream

Frequency (edge-to-edge) 108-1218 MHz 258-1218 MHz
Input Impedance 75 OHM
Total Input Power <40 dBmV
Input Return Loss > 6 dB

SC-QAM Channels

No. of Channels 32 Max.
Level Range (one channel) North Am (64 QAM, 256 QAM):-15 to + 15 dBmV
Euro (64 QAM): -17 to + 13 dBmV
Euro (256 QAM): -13 to + 17dBmV
Modulation Type 64 QAM, 256 QAM
Symbol Rate (nominal) North Am (64 QAM): 5.056941 Msym/s
North Am (256 QAM): 5.360537 Msym/s
Euro (64 QAM, 256 QAM): 6.952 Msym/s
Bandwidth North Am (64 QAM/256QAM with α=0.18/0.12): 6 MHz EURO (64 QAM/256QAM with α=0.15): 8 MHz

OFDM Channels

Signal Type OFDM
Max OFDM Channel Bandwidth 192 MHz
Mini Contiguous-Modulated
OFDM Bandwidth 24 MHz
No. of OFDM Channels 2
Frequency Boundary Assignment Granularity 25 KHz 8K FFT 50 KHz 4K FFT
Subcarrier Spacing / FFT Duration 25 KHz / 40 us 50 KHz / 20 us
Modulation Type QPSK, 16-QAM, 64-QAM,128-QAM,256-QAM, 512-QAM,1024-QAM, 2048-QAM, 4096-QAM
Variable Bit Loading Support with subcarrier granularity
Support zero bit loaded subcarriers
Level Range (24 MHz mini.
Occupied BW) Equivalent Power Spectral Density to SC-QAM of -15 to + 15 dBmV per 6 MHz -9 dBmV/24 MHz to 21 dBmV/24 MHz

Upstream

Frequency Range (edge to edge) 5-85 MHz, 5-204 MHz
Output Impedance 75 OHM
Maximum Transmit Level (Total average power) +65 dBmV
Output Return Loss >6 dB

SC-QAM Channels

Signal Type TDMA, S-CDMA
No. of Channels 8 MAX.
Modulation Type QPSK, 8 QAM, 16 QAM, 32 QAM,64 QAM, and 128 QAM
Modulation Rate (nominal) TDMA: 1280, 2560, and 5120 KHz S-CDMA: 1280, 2560, and 5120 KHz Pre-DOCSIS3 operation: TDMA: 160, 320, and 640 KHz
Bandwidth TDMA: 1600, 3200, and 6400 KHz S-CDMA: 1600, 3200, and 6400 KHz
Pre-DOCSIS3 operation: TDMA: 200, 400, and 800 KHz
Mini Transmit Level Pmin = +17 dBmV at ≤1280 KHz modulation rate Pmin = +20 dBmV at 2560 KHz modulation rate Pmin = +23 dBmV at 5120 KHz modulation rate

OFDMA Channels

Signal Type OFDMA
Max OFDMA Channel Bandwidth 96 MHz
Mini OFDMA Occupied Bandwidth 6.4 MHz (for 25 KHz subcarrier spacing) 10 MHz (for 50 KHz subcarriers spacing)
No. of Independently Configurable OFDMA Channels 2
Subcarrier Channel Spacing 25, 50 KHz
FFT Size 50 KHz: 2048 (2K FFT); 1900 Max. active subcarriers 25 KHz: 4096 (4K FFT); 3800 Max. active subcarriers
Sampling Rate 102.4 (96 MHz Block Size)
FFT Time Duration 40 us (25 KHz subcarriers) 20 us (50 KHz subcarriers)
Modulation Type BPSK, QPSK, 8-QAM, 16-QAM,32-QAM, 64-QAM,128-QAM,256-QAM, 512-QAM, 1024-QAM,2048-QAM, 4096-QAM

Wi-Fi

Full dual band concurrent WiFi 2.4GHz (3×3) IEEE 802.11n AP 5GHz (4×4) IEEE 802.11ac Wave2 AP
2.4GHz WiFi Power Up to +20dBm
5GHz WiFi Power Up to +36dBm
WPS WiFi Protected Setup (WPS)
WiFi Security Levers WPA2 Enterprise / WPA Enterprise WPA2 Personal / WPA Personal
IEEE 802.1x port-based authentication with RADIUS client
SSID Up to 8 SSIDs per radio interface
3×3 MIMO 2.4GHz WiFi features SGI STBC 20/40MHz coexistence
4×4 MU-MIMO 5GHz
WiFi features SGI STBC LDPC (FEC) 20/40/80/160MHz mode Multi-User MIMO
Channel Selection Manual / auto radio channel selection

Voice and Telephony

Voice Compliant PacketCable 2.0; EuroPacketCable 1.5
Multi-line Phone Support 2 Phone lines 3-Party Conference Calls Support Two Complex Voice Codecs simultaneously
DTMF Tone Relay RFC 2833
Packet Tone DTMF Generation Call Progress Generation Custom Tone Generation
REN 3 REN per device
Pulse Dialing DTMF/Pulse Tones Pulse/DTMF Tones Conversion

Mechanical