pdf 529-205-100 and 529-205-400 500AB & 500ABM 2- or 4-wire sets Popular

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529_205_100_I2_Jun76_500AB_500ABM_ID_529_205_400_May76_Connections.pdf

529-205-100 and 529-205-400 500AB & 500ABM 2- or 4-wire sets

529-205-100, Issue 2, June 76 - 500AB and 500ABM ID, Installation & Maintenance.

529-205-400, Issue 2, May 76 - 500AB and 500ABM Connections

500AB & ABM can be used with the 3A speakerphone system in 2-wire service (only).  Replaced 502-510-411.  The sets are listed for use solely with specially engineered lines -- not for general telephone use.  BSPs are marked for limited distribution.  Scan provided by Dave Gruger.

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