VSC-X Voice and Signaling Converter FEATURES nConverts PABX extension (FXO) to E&M interface n4-wire or 2-wire E&M interface nCompatible with EIA RS-464 Types I and II, British Telecom SSDC5, and most E&M signaling standards nSuitable for dial and touch-tone (DTMF) nThe voice interface on the E&M telephones DESCRIPTION side is switch-selectable for either nStand-alone unit (VSC-X) or 2-wire or 4-wire operation. The voice, nThe VSC-X (Extension Interface to and from the telephone/extension rack-mount card (VSC-X/R) Converter) is a voice and signaling is attenuated by 3 dB nominally when converter, enabling connection of 4-wire is selected. voice equipment to communications nThe VSC-X is available as either equipment operating with a desk-top unit or as a card for 2-wire/4-wire E&M interface. The insertion in the VSC-MN 19" VSC-X provides FXO loop start card-cage. The card-cage can carry interfacing to the E&M interface. up to 14 VSC-X/R cards. The nThe VSC-X interfaces between a VSC-X/R cards can be mixed with PABX extension or a telephone line the VSC-R (FXS) cards. from the public exchange, and the 2-wire/4-wire E&M interface. The unit enables remote extension from the PABX through digital multiplexers and a remote VSC unit. (For VSC unit see data sheet.) nThe VSC-X recognizes the ring signal (20 Hz, high voltage), translates it into the proper signaling standard, and sends the resulting signal over the “M” lead. When detecting activity on the “E” lead, the VSC-X activates both the off hook simulation (by activating the loop towards the PABX or exchange), and the “M” lead. Different “M” and “E” signaling types are strap-selectable to match virtually any PABX interface. nInsertion Loss SPECIFICATIONS ORDERING Telephone/Extension to mux nM Signaling Types interface (each direction): VSC-X/* 4-wire: 3 dB (0.5) Voice and Signaling Converter, British Telecom SSDC5 2-wire: 1 dB (0.5) stand-alone unit with internal power EIA RS-464/FCC Part 68: supply nOn Hook/Off Hook Types I and II VSC-X/R GND via 50 Ω resistor DC Impedance: Voice and Signaling Converter, card +18 V and -18 V via 50 Ω resistor Off Hook: 150 ohm, 50 ohm for VSC-MN 19" card-cage Pulse distortion: less than 1 msec On Hook: Higher than 1 M Ω VSC-MN/* nE Signaling Types nIndicators 19" card-cage for 14 VSC-X/R cards. British Telecom SSDC5 Power supply included Power: On when unit is EIA RS-464/FCC Part 68: * Specify: powered (green) Types I and II 230 for 230 VAC operation Ring: On when detecting +18 V and -18 V via resistor 115 for 115 VAC operation a ring (yellow) E Detector Current Threshold: 100 for 100 VAC operation Remote Off Hook: 6 mA or more: active state On when remote 3 mA or less: passive state subscriber goes nRing Detector off hook (yellow) nPower Impedance: 4-7 k Ω @ 20 Hz, 70 VRMS 100, 115 or 230 V (-15% to +10%) >10 k Ω @ 300-3400 Hz 47-63 Hz, 12 VA @ 0 dBm or less nPhysical (VSC-X) Ring Detector Level: Ring Detection: >14 VRMS Height: 40 mm / 1.6 in No Ring: <11 VRMS Width: 180 mm / 7.0 in nVoice Transmission, Depth: 250 mm /10.0 in Phone & PABX Interface Weight: 1.7 kg / 3.7 lb nEnvironment Transformer isolation between the o o two voice interfaces (1500 VRMS), Temperature: 0-50 C/32-122 F 600 ohm nominal impedance Humidity: Up to 90%, Return Loss: non-condensing Better than 17 dB @ 300 Hz to 3400 Hz Frequency Response:  1dB (300 to 3400 Hz, reference @1004 Hz) APPLICATION Specifications are subject to change without prior notification Extension Lines PABX 4W E&M 2W-CB VSC 4W U.S. EAST: U.S. WEST: 4W 900 Corporate Drive 7711 Center Avenue #350 E&M 2W-CB E&M Mahwah, NJ 07430 Huntington Beach, CA 92647 Tel: (201) 529-1100 Tel: (714) 897-2448 Fax: (201) 529-5777 Fax: (714) 891-1764 VOMUX VOMUX VSC VSC- X INTERNATIONAL HEADQUARTERS: 12 Hanechoshet Street VSC- X Tel-Aviv 69710, Israel Tel: (972) 3-6458181 Telex: 371263 RADCO IL Fax: (972) 3-498250, 5447851 Typical Application for VSC-X with VSC © 1992 RAD Data Communications 290-10-08/92