DHG544B
VoIP
Cable Modem
Technical Specifications
Standards / Certifications
Data | DOCSIS 2.0 certified |
Voice | PacketCable 2.0 certified |
CMTS Interoperability | Any qualified DOCSIS CMTS |
Receiver
Downstream Modulation | QAM 64/256 |
Downstream Frequency Range | |
| capabilities |
Maximum Downstream Data | 30.34/42.88 Mbps |
Range | (QAM 64/ QAM 256) |
Input Signal Level Range | |
| |
BER | |
| with FEC, |
| |
| with FEC, |
| received power = |
| to +15dBmV |
| |
| with FEC, |
| received power = |
| |
Input Impedance | 75 Ohm |
Transmitter
Upstream Modulation | QPSK and 16 QAM |
Additional Upstream Modulation | QAM 8/32/64 for |
Types | QAM 128 for |
Upstream Frequency Range | |
Maximum Upstream Data Range | 30.72 Mbps (QAM 64) |
Output Signal Level Range | |
| +8 to +58 dBmV/QPSK |
| +8 to +55 dBmV @ QAM 8/16 |
| +8 to +54 dBmV @ QAM 32/64 |
|
|
| +8 to +53 dBmv/All |
Output Impedance | 75 Ohm |
Channel Bandwidth | Programmable (200*N KHz) |
| N=1, 2, 4, 8, 16, 32 |
Automatic Level Adjust | yes |
Gain Control Range | 50dB |
Frequency Stability | ± 5 kHz |
Telephony Features
Audio Codecs | PCM |
| G.729a, G.729e, |
| G.728, iLBC and BV16 |
| Yes, Two phone lines, |
| conference calls, can support two |
| complex voice codecs simultaneously |
Fax Relay | T.38 |
DTMF Tone relay | RFC2833 |
Caller ID | Type I and Type II |
CLASS features | BASIC and Extended CLASS |
| features |
VAD (Voice Activity Detection) | yes |
CNG (Comfort Noise Generation) | yes |
Echo cancellation | G.165/G.168 up to 16ms |
Packet Tone | DTMF generation/Call Progress |
| Generation/Custom Tone Generation |
Call discrimination | Fax and Modem Detection |
Telephony interface capabilities | |
Modems | Up to V.90 (38.5kbps) |
RFC2833 DTMF Tone relay | Enabled/disabled via SNMP and |
| Telnet |
REN | 5 REN |
Pulse dialing | DTMF tones to pulse tones |
| conversion and pulse to DTMF tones |
| conversion |
VoIP Call Control
RTP layer | RFC1889/RFC1890 |
RTCP statistics collection | yes |
PacketCable Protocols | Protocol |
PC Compatible
CPU | 486DX 66MHz |
| (Pentium Preferred) |
Memory | RAM 16MB (32MB Preferred) |
Operating Systems | Windows 7, Vista, XP, |
| Me and 2000 |
Available Disk Space | 76 MB |
Sound Card | |
Video | VGA (SVGA Preferred) |
Ethernet Port | 10/100 |
Drive |