Hcd-e1

Transcript

HCD-E1 HDSL CSU/DSU • Enhanced diagnostics FEATURES • Optional E1 drop & insert • Standalone HDSL NTU/LTU • • • • • • • converting N × 56, N × 64 or full E1 data rates to HDSL transmission format Range of up to 9.2 km (5.7 miles) with H-RPT repeater or up to 4.8 km (3 miles) without H-RPT repeater Available with 4-wire or 2-wire line interface Operates opposite RAD’s HTU-E1, HTU-2, HDSL modules of the DXC and Megaplex families, and H-RPT (4-wire HCD-E1 only) Complies with the ETSI HDSL standards Supports priority bumping (4-wire HCD-E1 only) • Up to two data ports with the following interfaces: V.35, RS-530, V.36/RS-449, X.21, Ethernet (IR-ETH, IR-ETH/Q or IR-IP) • • • • sublink for PBX connectivity E1 sublink interface complies with ITU G.703, G.704, G.706, G.723 and G.823 Control of the remote unit via embedded operation channel or inband management Setup, control and monitoring using front panel, ASCII terminal or SNMP-based network management station Call-out capabilities supported via the control port Alarm buffer holding up to 100 alarms Alarm relay port for activation of external alarm devices upon alarm events include: Local loopback on the HDSL lines, local and remote loopbacks on the data channels and E1 sublink Integrated BER tester E1 and HDSL performance statistics collection in compliance with ITU-T G.706 and G.826 • 24 hour storage of network performance monitoring for the local and remote units • High voltage line protection in compliance with ITU K.21 HCD-E1 HDSL CSU/DSU • Transmission of HCD-E1 complies DESCRIPTION with the ETSI HDSL standards. The unit compensates for line impairment, bridge taps and mixed cabling, by using equalization technology, adaptive filtering, echo canceling and 2B1Q line coding. These factors provide high immunity to background noise and enable the transmission of multiple HDSL lines over the same physical cable. • HCD-E1 is an access unit that converts N × 56 kbps, N × 64 kbps, fractional or full E1 signals into HDSL transmission format. The conversion extends the transmission range to cover 4.8 km (3.0 miles) over a 4-wire line or 3.25 km (2.0 miles) over a 2-wire line, without the need for repeaters or fiber optic link. • HCD-E1 can be ordered with one or two data ports, and with an E1 sublink. The data port rates are selectable for any multiple of 56 kbps or 64 kbps. The user data of each port is placed into an E1 frame, using specified timeslots, and then converted into an HDSL frame. • The 4-wire HCD-E1 operates • An embedded channel in the HDSL transmission provides both control and diagnostic capabilities from a central HDSL device, up to the remote unit at the customer premises. The user can monitor the link and alarms, and perform online configuration, as well as diagnostic loopbacks to the remote unit. • HCD-E1 is available with the following data port interfaces: RS-530, V.35, X.21 and V.36. Additionally, HCD-E1 can be ordered with Ethernet interface module (IR-ETH, IR-ETH/Q or IR-IP), which enables LAN-to-LAN connectivity using the HDSL technology. opposite other RAD HDSL products, such as HTU-E1, HTU-2 and H-RPT. The central unit can be configured to manage a different type of unit at a remote location. • HCD-E1 can be managed via a • The E1 sublink interface complies dedicated timeslot of the E1 sublink or the HDSL main link. with ITU recommendations G.703 and G.704 and can work with or without CRC-4. HDB3 zero suppression is used. • Timeslot assignment is programmable, allowing data from each data port and from the E1 sublink to be placed into timeslots, either consecutively or alternately. HCD-E1 provides full user control of the data ports timeslot allocation without restrictions. • Multiple clock source selection ensures maximum flexibility for supporting different applications. The main HDSL link of the central HCD-E1 may be clocked to an internal oscillator, to one of the data ports (in DTE2 mode) or to the E1 sublink. The data channels may be set to the following clock options: DCE – the data channel provides both transmit and receive clocks to the user DTE DTE1 – the data channel provides the receive clock to the user, while receiving the transmit clock from the user DTE DTE2 – the data channel receives both the transmit and receive clocks from the user equipment. The remote HCD-E1 recovers timing from the incoming HDSL signals. APPLICATIONS Central Site Customer Premises Ethernet Ethernet 4.8 km over 4-wire X.21 HCD-E1 Router 3.25 km over 2-wire X.21 HCD-E1 E1 Router E1 PBX PBX ASCII Terminal Figure 1. Point-to-Point Application HCD-E1 HDSL CSU/DSU • The 4-wire HCD-E1 supports • HCD-E1 supports call-out of the alarm conditions via its front panel control port. • Setup, control and monitoring of status and diagnostics information can be performed using one of the following: Front panel LCD with three buttons, using menu-driven management ASCII terminal, connected either directly or via a dial-up modem to the async control port, using command line interpreter SNMP management station connected to the async control port, using Serial Link Interface Protocol (SLIP). • HCD-E1 supports an internal SNMP agent and can be controlled by the RADview SNMP network management application, as well as by any generic SNMP station. • Alarm port operates via a pair of change-over dry contacts of the RJ-11 connector. The port relays most of the major alarm conditions caused by hardware failure, loss of sync, database corruption etc. • Return Loss SPECIFICATIONS priority bumping, which allows the user to select the timeslot priority (high or low). In this case, if one of the lines is down, HCD-E1 continues to send data over the remaining pair. 16 dB min, 40 kHz to 292 kHz at 135Ω (584 kbaud) • Connector RJ-45 HDSL INTERFACE • Line Type One or two unconditioned twisted pairs • Line Code 2B1Q • Line Baud Rate 4-wire: 584 kbaud (equivalent to 1168 kbps), for each pair 2-wire: 1160 kbps (equivalent to 2320 kbps) • Transmit Pulse Shape ETR-152 • Equalizer Automatically adaptive • Transmit Signal Power +13.5 dBm ±0.5 dBm • Loop Loss 27 dB max at 150 kHz (584 kbaud) • Range (without noise) 4-wire: Without repeater: Up to 4.8 km (3.0 miles) over 24 AWG (0.5 mm) Up to 3.8 km (2.4 miles) over 26 AWG (0.4 mm) With repeater: Up to 9.2 km (5.7 miles) over 24 AWG (0.5 mm) Up to 7.2 km (4.5 miles) over 26 AWG (0.4 mm) 2-wire: 3.25 km (2.0 miles) over 24 AWG (0.5 mm) 2.75 km (1.7 miles) over 26 AWG (0.4 mm) Central Site DATA PORT INTERFACE • Number of Ports One or two • Interface Types and Connectors RS-530: 25-pin D-type female V.35: 34-pin male (via adapter cable) V.36 (RS-449): 37-pin D-type male (via adapter cable) X.21: 15-pin D-type male (via adapter cable) IR-ETH (Ethernet bridge): RJ-45 IR-ETH/Q (Ethernet bridge with VLAN support): RJ-45 IR-IP (IP router): RJ-45 • Data Rate N × 56 kbps or N × 64 kbps (n=1, 2, ..., 31, 32) • Control Signals CTS follows RTS or constantly ON, soft-selectable DSR constantly ON, unless in test mode DCD constantly ON, unless sync loss occurs Customer Premises Ethernet E1s 4-wire Network 4.8 km LRS-24 X.21 HCD-E1 Router HTU-E1C E1 PBX RADview SNMP Management Station Figure 2. E1 Network Extension HCD-E1 HDSL CSU/DSU E1 SUBLINK INTERFACE • Applicable Standards ITU-T Rec. G.703, G.704, G.706, G.732, G.823 • Framing G732N, CCS, with CRC-4 G732N, CCS, without CRC-4 Unframed • Line Code HDB3 • Nominal Line Data Rate 2.048 Mbps • Impedance 120Ω, balanced 75Ω, unbalanced • Signal Level Transmit Levels: -3V ±10%, balanced -2.37V ±10%, unbalanced Receive Levels: 0 to -10 dB • Jitter Performance Per ITU G.823 • Connectors 8-pin RJ-45 female, balanced Two BNC coaxial, unbalanced SUPERVISORY PORT • Interface V.24 (RS-232) • Type DCE • Format Async 7 or 8 bits; odd, even or no parity • Baud Rate 0.3, 1.2, 2.4 or 9.6 kbps • Connector 9-pin, D-type female GENERAL • Indicators HDSL interface (per loop): HDSL LOS – Loss of Sync E1 sublink interface: LOC LOS – Local Loss of Sync REM LOS – Remote Loss of Sync TST – Test ALM – Alarm • Alarm Relay 3-relay contacts (RJ-11) on the rear panel, activated by major alarm events • Timing ORDERING HDSL Link: Receive timing: Recovered from received HDSL signal Transmit timing: Internal, derived from local ±50 ppm oscillator External, locked to transmit clock of selected sync channel or to E1 sublink E1 Sublink: Receive timing: Recovered from the E1 sublink receive data signal Transmit timing: Follows the transmit timing of the HDSL link Data Port: DCE: RX and TX clock to DTE DTE1: RX clock to user device; TX clock from user device HCD-E1N/*/#/+/$ HDSL CSU/DSU, 4-wire operation HCD-E1/2W/*/#/+/$ HDSL CSU/DSU, 2-wire operation HCD-E1N-2/*/#/+/$ HDSL CSU/DSU, 4-wire operation, version 2.0 HCD-E12/2W/*/#/+/$ HDSL CSU/DSU, 2-wire operation, version 2.0 DTE2: RX and TX from DCE • Diagnostics and Statistics • • • • • Loopbacks: Local loops on data channel and E1 sublink of local unit Local loop on HDSL lines Remote loops on data channel and E1 sublink of local unit Remote loops on data channel and E1 sublink of remote unit Inband-activated remote loop on data channel of remote unit BERT: BER measurement via remote HCD-E1 (per data channel) Statistics: E1 performance statistics as per ITU-T Rec. G.706 HDSL performance statistics as per ITU-T Rec. G.826 Power Supply AC: 100 to 240 VAC, 50 or 60 Hz DC: -48 VDC (-36 to -72 VDC) Power Consumption 4.7W Line Protection According to ITU K.21 Physical Height: 44.0 mm / 1.75 in Width: 215 mm / 8.5 in Depth: 243 mm / 9.5 in Weight 1.5 kg / 3.5 lb Environment Temperature: 0–50°C/32–122°F Humidity: Up to 90%, non-condensing  1998–2003 RAD Data Communications Ltd. All other trademarks are the property of their respective holders. * Specify power supply: AC for 100 to 240 VAC 48 for -48 VDC # Specify S1 for E1 sublink (default is without E1 sublink) + Specify number of data ports: 1 for one data port 2 for two data ports Note: HCD-E1 units with IR-ETH, IR-ETH/Q or IR-IP interface module may include only one data port. $ Specify data port interface: V35 for V.35 interface X21 for X.21 interface 530 for RS-530 interface V36 for V.36 interface UTP for IR-ETH module UTP/Q for IR-ETH/Q module UTP/IP for IR-IP module RM-17 Special hardware for mounting one or two HCD-E1 units in a 19-inch rack data communications www.rad.com International Headquarters 24 Raoul Wallenberg Street Tel Aviv 69719, Israel Tel: (972) 3-6458181 Fax: (972) 3-6498250, 6474436 Email: [email protected] U.S. Headquarters 900 Corporate Drive Mahwah, NJ 07430 Tel: (201) 529-1100 Toll free: 1-800-444-7234 Fax: (201) 529-5777 Email: [email protected] 174-100-06/03 Specifications are subject to change without prior notice.