DXC-2 T1/E1 Converter and Timeslot Cross-Connect link statistics are stored in memory in compliance with both the ANSI and AT&T standards. When operating in CRC-4 format, E1 link statistics are stored in memory in compliance with ITU G.706. • Selectable timing options cover all timing possibilities for the T1/E1 interface. These include internal clock and loopback timing, for either the T1 or E1 interface. • Setup, control, status, alarms and diagnostic information can be FEATURES • The T1 to E1 conversion can be monitored and controlled via the set to comply with ITU G.802, front panel LCD display or via an Annex 2. This enables the location • Converts between T1 and ASCII terminal. of the T1 F-bit to be specified in E1 data and signaling the E1 data stream. • DXC-2 is a compact 1U-high • Configurable A-law/µ-law desktop standalone unit. A rack and signaling conversion, or • A user-programmable connection mount adapter kit enables table allows DXC-2 to connect any transparent conversion at installation of one or two incoming 64 kbps timeslot to any 64 kbps timeslot level (side-by-side) standalone units in a outgoing 64 kbps timeslot. • Complies with ITU Rec. 19" rack (see Ordering). Programming can be performed G.802, Annex 2 during system operation without SPECIFICATIONS • Built-in CSU (T1) and LTU any disruption to service. (E1) options available • The T1 interface complies with E1 INTERFACE • Controlled slip for buffer AT&T TR-62411 and ANSI T1.403 • Data Rate overflow/underflow requirements, supporting D4 or 2.048 Mbps ESF framing formats and AMI line • Monitoring and control from • Compliance code. Zero suppression is terminal or front panel LCD ITU-T Rec. G.703, G.704, G.732 selectable for transparent, B7ZS or • Loopback capabilities B8ZS. • Framing � • E1/E1 or T1/T1 timeslot 256N – no MF, CCS • The E1 interface complies with � 256N – no MF, CCS with CRC-4 cross-connect with optional ITU Rec. G.703, G.704, G.732 � 256S – TS16 MF, CAS frame conversion and G.823, and supports both 2 � 256S – TS16 MF, CAS with CRC-4 and 16 frames per multiframe � Unframed (T1→E1 conversion only) DESCRIPTION with or without CRC-4. Line code • Line Code is HDB3. • The DXC-2 E1/T1 Converter and HDB3 Timeslot Cross-Connect enables • DXC-2 can also be ordered with • Signal Level conversion between one T1 signal two ports of the same type (two Receive: and one E1 signal (24 timeslots). E1 or two T1). This allows the 0 to -10 dB without LTU reshuffling of timeslots or the • For conversion between T1 and 0 to -40 dB with LTU modifying of framing patterns; for E1 trunks, DXC-2 can perform the Transmit: example, D4 to ESF for a T1 required A-law/µ-law and ±3V (±10%), balanced product, or G.704 without CRC-4 signaling conversion, in ±2.37V (±10%), unbalanced to G.704 with CRC-4 for an E1 compliance with T1 and E1 • Impedance product. (CEPT) standards. 120Ω, balanced • DXC-2 can be ordered with a • Maintenance capabilities include 75Ω, unbalanced built-in CSU for T1 and LTU for local and remote loopbacks. • Jitter Performance E1 interfaces (see Ordering). When operating in ESF format, T1 As per ITU-T Rec. G.823 DXC-2 T1/E1 Converter and Timeslot Cross-Connect • Timeslot Mapping • Connectors • Power Any timeslot to any timeslot, � Balanced: 15-pin D-type female 100, 115 or 230 VAC; 47 to 63 Hz with/without A-law/µ-law and � Unbalanced: two BNC coaxial -48 VDC (-36 to -72 VDC), 15W signaling conversion per timeslot • Physical T1 INTERFACE • Elastic Buffer Height: 4.4 cm / 1.7 in • Data Rate � Buffer length: ±1 frame Width: 21.6 cm / 8.4 in � 1.544 Mbps Underflow: 1 frame repeated Depth: 2.4 cm / 9.5 in � Overflow: 1 frame skipped Weight 1.4 kg / 3.1 lb • Compliance (No frame sync loss for buffer AT&T TR-62411, ANSI T1.403 • Environment overflow or underflow) ITU-T Rec.G.703, G.704 Temperature: 0–50°C/32–122° � Data delay: up to 375 msec Humidity: Up to 90%, • Framing • Unused Timeslot � non-condensing D4(SF) User-defined both for E1 and T1 � ESF interfaces ORDERING � Unframed (T1→E1 conversion only) • Diagnostics DXC-2/~/&/% � Local E1 or T1 loopback • Line Code T1/E1 Converter and Timeslot � Remote E1 or T1 loopback AMI Machine � Code activated network • Impedance loopback per ANSI T1.403 ~ Specify power supply: 100Ω, balanced • Statistics 100 for 100 VAC operation • Zero suppression � T1 ESF diagnostics: 115 for 115 VAC operation Transparent, B7ZS, B8ZS ANSI T1.403 full support 230 for 230 VAC operation • Signal Level AT&T 54016 local support 48 for -48 VDC operation Receive: Transparent FDL between two & Specify link interface: 0 to -40 dB with CSU T1 ports 0 to -10 dB without CSU 2T1 for dual T1 ports � E1 CRC-4 diagnostics: Transmit: 2E1 for dual E1 ports Per ITU-T G.706 Nominal level Default is one T1 and one E1 port • Alarm Response ±3V (±10%), balanced � OOS indications in individual # Specify optional CSU/LTU: Levels with CSU timeslots: C1 for CSU/LTU in port 1 0 dB, -7.5 dB, -15 dB, -22.5 dB DS0 pattern, C2 for CSU/LTU in port 2 Levels without CSU OOS A, B signaling bits Adjustable to be measured at Default is without CSU/LTU � Link alarms: 0 to 655 ft Local loss of link input signal RM-1/NEW • Jitter Performance Local loss of synchronization to Mechanical adaptor, for mounting As per AT&T TR-62411 link signal one or two units (side by side) in a • Connector Local reception of AIS signal 19" rack 15-pin D-type, female Remote loss of synchronization or remote loss of link signal GENERAL • Supervisory Port • Timing � data communications Interface: V.24/RS-232, async � Main Source (soft-selectable): � Connector: 9-pin D type, female Internal oscillator ±30 ppm www.rad.com � Data Rate: 300-9600 bps, Locked to receive clock of link A International Headquarters autobaud Locked to receive clock of link B 24 Raoul Wallenberg Street � • Indicators Fallback Source (independently Tel Aviv 69719, Israel � Local sync loss: LINK A, LINK B Tel: (972) 3-6458181 soft-selectable): Fax: (972) 3-6498250, 6474436 � Remote sync loss: LINK A, LINK B Locked to receive clock of link A Email: rad@rad.co.il � TEST Locked to receive clock of link B U.S. Headquarters • Front Panel Controls 900 Corporate Drive � LCD: 2 rows x 16 characters Mahwah, NJ 07430 APPLICATION � Push-buttons: CURSOR, Tel: (201) 529-1100 Toll free: 1-800-444-7234 SCROLL, ENTER Fax: (201) 529-5777 Email: market@radusa.com E1 T1 771-100-09/02 DXC-2 PBX PBX  1993-2002 RAD Data Communications Ltd. 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