Paradyne 7974 User Manual

Also see for Hotwire 7974: Installation instructions User guide Installation instructions Wall Mounting Installation Instructions User guide

Contents

Paradyne 7974 User Manual Manual pdf 51 page image

Configuring the Unit Using the Internal Switches4-97900-A2-GB21-00 August 2000Switchpack Definitions for Model 7976Table 4-9 lists Switchpack S4 definitions.Table 4-9. Switchpack S4 Definitions (Model 7976)Switch # . . . Allows you to . . . Default in Bold1 Enable or disable Switchpacks S3 and S4.OFF = Switchpacks DisabledON = Switchpacks Enabled2 Control line termination.OFF = 120 OhmON = 75 Ohm3 Select the unit’s primary timing source. Valid only for a unit configuredas the LTU.OFF = Internal ClockON = External Clock4 Control the unit’s E1 line coding.OFF = HDB3ON = AMI5 Determine whether the unit will use G.704 framing. Unframed mode(ON) is valid only when switches 3–5 of Switchpack S3 are set to fullrate (all Off).OFF = FramedON = Unframed6 Enable CRC-4 generation and monitoring. Valid only for a unitconfigured as the LTU. The NTU is automatically configured to matchthe LTU setting.OFF = Disable CRC-4 generation and monitoringON = Enable CRC-4 generation and monitoring7 Control whether Channel 16 contains signaling information or data.OFF = Channel 16 is used for signaling (voice mode)ON = Channel 16 is used for data (data mode)8 Not used