Paradyne COMSPHERE 3910 Regulatory Information

Comsphere 3900 series government requirements for great britain
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Summary of Contents for Paradyne COMSPHERE 3910

  • Page 1 You have accessed an older version of a Paradyne product document. Paradyne is no longer a subsidiary of AT&T. Any reference to AT&T Paradyne is amended to read Paradyne Corporation.
  • Page 2 This document highlights government requirements, safety warnings, installation procedures, features, and functions that are unique to COMSPHERE document is intended to be used in conjunction with the COMSPHERE 3900 Series Modems, Models 3910 and 3911 Point-to-Point/Multipoint, Installation and Operation Manual, Document No. 3910-A2-GN32. Please consult this Installation and Operation Manual for overall operation of the 3900 Series modem.
  • Page 3 Connection to Supply Mains The wires in the mains lead supplied with this equipment are coloured in accordance with the following code: As the colours of the cores in the mains lead of this equipment may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The core which is coloured green and yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol...
  • Page 4 Telephone Line These modems may be connected to the following circuits: Direct exchange lines of the public switched telephone network, but not shared service or 1 plus 1 carrier systems. The line should provide either loop disconnect or multifrequency signalling. Private speechband circuits provided by British Telecommunications, Hull City Council or Mercury Communications Limited.
  • Page 5: Technical Specifications

    Model 3910 Input Voltage Requirements The power supply used with the Model 3910 modem (Figure 1) is auto-sensing and capable of operating (without restrapping) with input voltages from 100 Vac to 240 Vac, and input frequencies from 50 Hz to 60 Hz.
  • Page 6: Model 3910 Modem Installation

    19,200 bps. Also, low capacitance cables may be necessary for speeds greater than 19,200 bps or distances greater than 50 feet. Figure 1 shows how Model 3910 modems are connected to certain TELCO jack types using the supplied cables. Figure 1. Model 3910 Rear Panel and Power Supply...
  • Page 7: Model 3910 4-Wire/2-Wire Leased-Line Connection

    Model 3910 4-wire/2-wire Leased-line Connection Use the following procedure to connect a Model 3910 to the leased-line network interface (use the VF cord labeled LEASED LINE): 1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED, Figure 1.
  • Page 8: Model 3911 Modem Installation

    Control Branch — Make Busy/Remove Make Busy Function The Make Busy function, described in Chapter 3 of Document No. 3910-A2-GN32, is not offered in the Model 3910 or 3911 modems (3910-A2-402 and 3911-B1-002) for the United Kingdom. If this function is selected from the diagnostic control panel (DCP), the message Invalid Command appears.
  • Page 9 Line Dialer Configuration Options for the United Kingdom Blind Dial Paus: 2sec Nxt 2sec Blind Dial Pause. Set to 2 seconds. Read-only and cannot be changed. Only appears when Dial Tone Detect is disabled. The AT command is S6=2 and cannot be changed. Auto Make Busy: Disable Nxt Disable Auto Make Busy.
  • Page 10 Table 5 Leased Line Configuration Options for the United Kingdom Leased TX Level: –13 dBm Nxt –13 dBm Leased Transmit Level. Set to –13 dBm. Read-only and cannot be changed. The AT command is S45=13 and cannot be changed.

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Comsphere 3911

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