• Point to point Ethernet and TDM MUX data extender over multiple G.SHDSL.bis copper lines
• Compliant with ITU-T G.991.2 standard, TC-PAM 16/32/64/128 line coding and IEEE 802.3ah EFM 2Base-TL bonding.
• 1 or 2 pairs G.SHDSL.bis with 5.7Mbps per pair
• Support extension rate up to 15.2Mbps over a single pair of copper
• Support various interfaces include Fast Ethernet, E1, RS-232 EIA-530, X.21 and V.35
• DIP switch can be used to quickly configure 8 sets of default profile
• Automatic line rate selection with Line Probe enabled
• Flexible installation by console, Telnet, WEB GUI, SNMP or DIP-Switch
• Front panel OAM loopback button test function, easy to perform loop diagnostics
• Remote software upgrade for field-deployed units via TFTP or HTTP/HTTPS
• Support security-link feature and DSL line protection for data transmission
• Built-in lightning protection circuit
• Ethernet switching and bridging with VLAN prioritization and QoS

Line Interface – G.SHDSL.bis

• Type: 2 or 4-wire
• Standard: ITU-T G.991.2, ETSI 101 524
• Bonding protocol: IEEE 802.3ah EFM 2Base-TL
• Line rate: n x 64Kbps, n=3~239 (2w), 6~478 (4w),
• Connector: 1 x RJ-45
• Line coding: TC-PAM 16/32/64/128
• Impedance: 135 W

DTE Interface – Ethernet

• Ethernet type: 10/100BaseT
• Connector: 2 x RJ-45
• Supports 802.3x flow control
• Auto-MDI/MDIX detection
• Auto-negotiation for speed and duplex
• Support Layer 2 functions

Ethernet L2 function

• Supports 802.1d transparent bridge function
• Supports Bridge filter function based on source MAC addresses
• Scalable per port bandwidth control (Step = 64K, up to 100M)
• 2K MAC learning address
• Ethernet packet length up to 2000 bytes
• Supports 802.3x flow control
• Provides 802.1q VLAN tagging
• Supports 802.1p QoS facility

DTE Interface – E1

• Data Rate: 2.048Mbps
• Connector: RJ-45 for balanced E1 120 W
• (Optional external convert cable for unbalanced 75 W)
• Line coding: HDB3
• Framing: Framed /Framed+CRC /Unframed
• Compliance: ITU-T G.703 and G.704
• Jitter Performance: compliant with ITU-T G.823
• Support BERT test mode

DTE Interface – Nx64k Data

• Data Rate: n x 64Kbps, up to 4.6Mbps
• Connector: 2 x DB-25 Female with optional adapter cable (V35/X21/RS449/RS530/RS530A)
• DTE and DCE clock settings
• Full duplex
• Synchronous Data Rates

DTE Interface – V.24(RS-232)

• 2 X DB-25, Support RS-232, RS-422 and RS-485 (optional adapter cable)
• Data Rates: Asynchronous-300/600/1200/2400/4800/9600/19200/ 38400/48000/56000/57600/115200 bps
• Synchronous-1200/2400/4800/9600/19200/38400/ 57600/115200 bps
• Full duplex / Half duplex support
• Packet data bit : 7/8 bit
• Packet stop bit (1 / 2bit ) can be selected

Management Interface

• Console port: DB9 connector (RS232C)
• Ethernet port: RJ-45 connector (Fast Ethernet)
• Support remote management
• Support Local and remote diagnostic status
• Support Performance monitoring functions
• Supports management by Ethernet / RS232 interface
• Support VLAN function
• Support remote upgrade via WEB
• Front panel reset to factory default button

User Management

• Support three access levels for administrator, operator, user
• User can manually add, modify and delete account and password

Security Management

• Manage permission settings and queries
• Supports security protocol SSHv2 / SNMPv3
• Support login password complexity of 6 characters, uppercase and lowercase letters, digits, special symbols
• Support login account permission level setting, operation log
• Anti-camouflage attack mechanism: lock IP and delay login
• Support SSL1.2, HTTPS secure encrypted connection access

Performance Management

• Historical performance query, report and monitoring
• Performance data storage and query
• Support ES / SES, SHDSL UAS count and query
• SHDSL CRC error counting and querying
• SHDSL SNR signal noise rate status query
• SHDSL ATN signal attenuation status query

Fault Management

• Alarm status display
• Support Current / History alarm log
• Alarm Level setting and query: Critical、Major、Minor、Normal
• Alarm logs (alarm type, time, status and Level)

Alarm Prompt

• Interface data loss alarm
• Ethernet disconnection alarm
• Clock source automatically switching alarms
• DSL ATN line signal attenuation value alarm
• DSL SNR signal noise rate value alarm
• DSL CRC line loop check value alarm
• E1 signal and packet loss alarm
• Remote Power failure alarm (Dying Gasp)

System Management

• Supports Telnet/SSH、Web/HTTPS
• Supports SNMPv3 network management interface
• Control and monitor remote unit via Embedded Operation Channel (EOC)
• Supports SNTP and OAM functions
• Support Internal / External clock source

Certification

• ISO 9001 Quality Management
• China CCC Quality Certification
• CE Approval, IEC61000-4-X, ETSI EN300 386, EN55032, EN55024
• CE LVD Safety, IEC/EN 60950-1
• Electricity, EN61850-3
• Railway EN50121-4 (*pending), EN50155 (*pending),
• ITU-T K.45 standard

Power Requirement

• Power Interface: Terminal Block * 1 / Standard 12VDC * 1
• Dual power supply with DC Jack 12VDC input
• AC: 90 to 240 VAC, &50~60Hz
• DC: -24 / -48 / -72VDC option

LED indication

• Comet 1642/1644: DSL 1 ~ 2, ALM, PORT 1 ~ 2, PWR, CPE, TST, E1
• Comet 1652/1654: DSL 1 ~ 2, ALM, PORT 1 ~ 2, PWR, CPE, TST

Operating Environment

• Operation Temperature: -20 °C ~ 75 °C
• Storage temperature: -40 °C ~ 85 °C
• Humidity: up to 95% (non-condensing)

Industrial design

• Full metal housing
• Provide ground terminal, wall hanging hole design
• Power input terminal block
• DIP switch for Quick profile setting
• 42(W) x 160(D) x 160(H) mm