CLICK HERE FOR THE LIST VIEW.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges?format=html Mon, 23 Nov 2020 13:34:00 -0800 en-GB hourly 1 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/548-division-750a-pbx/13899-548-500-110-i1-dec29-750a-pbx-description?format=html 548-500-110 i1 Dec29 - 750A PBX Description https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/548-division-750a-pbx/13899-548-500-110-i1-dec29-750a-pbx-description?format=html paul-f@verizon.net (Paul F) 548 Division - 750A PBX Mon, 23 Nov 2020 13:34:00 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/551-division-756a-757a-758a-b-c-761-770-pbx/13634-551-736-301-i2-sep68-attendant-and-station-equip-operation-761b-pbx?format=html 551-736-301 i2 Sep68 - Attendant and Station Equip - Operation - 761B PBX See "Phone Service for Small Motels - The 761A PBX Switch and 543D Desk Set" in Singing Wires, September 2016. Contributed by Paul Wills. Processed by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/551-division-756a-757a-758a-b-c-761-770-pbx/13634-551-736-301-i2-sep68-attendant-and-station-equip-operation-761b-pbx?format=html See "Phone Service for Small Motels - The 761A PBX Switch and 543D Desk Set" in Singing Wires, September 2016. Contributed by Paul Wills. Processed by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 551 Division - 756A, 757A, 758A-B-C, 761, 770 PBX Mon, 02 Dec 2019 16:24:55 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/551-division-756a-757a-758a-b-c-761-770-pbx/13633-551-722-210-i2-jun79-attendant-station-equipment-761-pbx?format=html 551-722-210 i2 Jun79 - Attendant Station Equipment - 761 PBX See "Phone Service for Small Motels - The 761A PBX Switch and 543D Desk Set" in Singing Wires, September 2016. Contributed by Paul Wills. Processed by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/551-division-756a-757a-758a-b-c-761-770-pbx/13633-551-722-210-i2-jun79-attendant-station-equipment-761-pbx?format=html See "Phone Service for Small Motels - The 761A PBX Switch and 543D Desk Set" in Singing Wires, September 2016. Contributed by Paul Wills. Processed by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 551 Division - 756A, 757A, 758A-B-C, 761, 770 PBX Mon, 02 Dec 2019 16:24:52 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/551-division-756a-757a-758a-b-c-761-770-pbx/13632-551-720-210-i3-mar79-switching-cabinet-761b-pbx?format=html 551-720-210 i3 Mar79 - Switching Cabinet - 761B PBX See "Phone Service for Small Motels - The 761A PBX Switch and 543D Desk Set" in Singing Wires, September 2016. Contributed by Paul Wills. Processed by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/551-division-756a-757a-758a-b-c-761-770-pbx/13632-551-720-210-i3-mar79-switching-cabinet-761b-pbx?format=html See "Phone Service for Small Motels - The 761A PBX Switch and 543D Desk Set" in Singing Wires, September 2016. Contributed by Paul Wills. Processed by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 551 Division - 756A, 757A, 758A-B-C, 761, 770 PBX Mon, 02 Dec 2019 16:24:48 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/13631-540-518-300-i2-jan75-ani-sd-1e007-01-general-maint-proc?format=html 540-518-300 i2 Jan75 - ANI SD-1E007-01 General Maint Proc Contributed by Paul Wills. Processed by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/13631-540-518-300-i2-jan75-ani-sd-1e007-01-general-maint-proc?format=html Contributed by Paul Wills. Processed by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 540 Division - More Than One PBX Series Mon, 02 Dec 2019 16:21:27 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/13630-540-310-501-i1-feb66-pbx-access-line-ckt-sd-5e000-01-opr-tests?format=html 540-310-501 i1 Feb66 - PBX Access Line Ckt SD-5E000-01 - Opr Tests Contributed by Paul Wills. Processed by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/13630-540-310-501-i1-feb66-pbx-access-line-ckt-sd-5e000-01-opr-tests?format=html Contributed by Paul Wills. Processed by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 540 Division - More Than One PBX Series Mon, 02 Dec 2019 16:21:23 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/13508-552-000-000pt-il-aug76-and-ir-oct78-index-non-bell-type-pbx-pacific-tel?format=html 552-000-000PT iL Aug76 and iR Oct78 - Index Non-Bell Type PBX - Pacific Tel Contributed and scanned by Steve Cichorsky. OCR and Processing by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/13508-552-000-000pt-il-aug76-and-ir-oct78-index-non-bell-type-pbx-pacific-tel?format=html Contributed and scanned by Steve Cichorsky. OCR and Processing by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 530 - 559 Private Branch Exchanges Mon, 11 Nov 2019 15:42:06 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13481-536-580-510-add-i1-mar71-558a-pbx-instal-tests-and-inspections?format=html 536-580-510 Add i1 Mar71 - 558A PBX - Instal, Tests and Inspections Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13481-536-580-510-add-i1-mar71-558a-pbx-instal-tests-and-inspections?format=html Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 536 Division - 500 Series PBX Sun, 10 Nov 2019 19:07:53 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13480-536-580-310-add-i1-feb70-29a2-type-console-replacing-page-addendum?format=html 536-580-310 Add i1 Feb70 - 29A2-type Console "Replacing Page" Addendum Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13480-536-580-310-add-i1-feb70-29a2-type-console-replacing-page-addendum?format=html Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 536 Division - 500 Series PBX Sun, 10 Nov 2019 19:07:50 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13479-536-580-210-add-i1-mar71-558a-pbx-ident-inst-and-conn?format=html 536-580-210 Add i1 Mar71 - 558A PBX - Ident Inst and Conn Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13479-536-580-210-add-i1-mar71-558a-pbx-ident-inst-and-conn?format=html Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 536 Division - 500 Series PBX Sun, 10 Nov 2019 19:07:46 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13478-536-580-110-i1-feb70-558a-pbx-description-of-operation?format=html 536-580-110 i1 Feb70 - 558A PBX - Description of Operation Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/13478-536-580-110-i1-feb70-558a-pbx-description-of-operation?format=html Contributed and scanned by Steve Cichorsky. OCR and processing by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 536 Division - 500 Series PBX Sun, 10 Nov 2019 19:07:43 -0800 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/534-division-pbx-common-sections/13379-534-400-110-i1-feb29-manual-pbx-swbd-cct-and-oper-features?format=html 534-400-110 i1 Feb29 - Manual PBX Swbd Cct and Oper Features Contributed by Len Hicken. OCR by Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/534-division-pbx-common-sections/13379-534-400-110-i1-feb29-manual-pbx-swbd-cct-and-oper-features?format=html Contributed by Len Hicken. OCR by Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 534 Division - PBX - Common Sections Thu, 05 Sep 2019 14:02:56 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/12998-546-400-111-i1-nov29-740c-pbx-general-description?format=html 546-400-111 i1 Nov29 - 740C PBX - General Description Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/12998-546-400-111-i1-nov29-740c-pbx-general-description?format=html Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 530 - 559 Private Branch Exchanges Thu, 21 Mar 2019 15:35:38 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/548-division-750a-pbx/12997-548-500-110-i1-dec29-750a-pbx-general-description?format=html 548-500-110 i1 Dec29 - 750A PBX - General Description Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/548-division-750a-pbx/12997-548-500-110-i1-dec29-750a-pbx-general-description?format=html Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 548 Division - 750A PBX Thu, 21 Mar 2019 15:33:39 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/12996-540-107-302-i2-dec65-attendant-equipment-5-or-6-type-tel-console-method-of-operation-701a-701b-740e-pbx?format=html 540-107-302 i2 Dec65 - ATTENDANT EQUIPMENT 5- or 6-Type Tel Console - Method of Operation - 701A 701B 740E PBX Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/12996-540-107-302-i2-dec65-attendant-equipment-5-or-6-type-tel-console-method-of-operation-701a-701b-740e-pbx?format=html Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 540 Division - More Than One PBX Series Thu, 21 Mar 2019 15:30:18 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/12995-540-107-301-i2-nov65-attendant-equipment-6-button-key-tel-set-method-of-operation-701a-701b-740e-pbx?format=html 540-107-301 i2 Nov65 - ATTENDANT EQUIPMENT - 6-Button Key Tel Set - Method of Operation - 701A 701B 740E PBX Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/12995-540-107-301-i2-nov65-attendant-equipment-6-button-key-tel-set-method-of-operation-701a-701b-740e-pbx?format=html Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 540 Division - More Than One PBX Series Thu, 21 Mar 2019 15:30:13 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/12994-540-107-300-i2-nov65-attendant-equipment-101-type-key-equip-method-of-operation-701a-701b-740e-pbx?format=html 540-107-300 i2 Nov65 - ATTENDANT EQUIPMENT - 101 Type Key Equip - Method of Operation - 701A 701B 740E PBX Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/540-division-more-than-one-pbx-series/12994-540-107-300-i2-nov65-attendant-equipment-101-type-key-equip-method-of-operation-701a-701b-740e-pbx?format=html Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 540 Division - More Than One PBX Series Thu, 21 Mar 2019 15:30:07 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/12981-538-040-110-i1-aug29-605a-pbx-general-description?format=html 538-040-110 i1 Aug29 - 605A PBX - General Description Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/12981-538-040-110-i1-aug29-605a-pbx-general-description?format=html Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 530 - 559 Private Branch Exchanges Thu, 21 Mar 2019 14:36:19 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/12980-536-550-230-i2-aug60-555-pbx-tests-and-inspections-at-time-of-installation?format=html 536-550-230 i2 Aug60 - 555 PBX - Tests and Inspections at Time of Installation Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/12980-536-550-230-i2-aug60-555-pbx-tests-and-inspections-at-time-of-installation?format=html Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 536 Division - 500 Series PBX Thu, 21 Mar 2019 14:32:51 -0700 https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/12979-536-550-210-i4-mar70-555-pbx-installation?format=html 536-550-210 i4 Mar70 and PT App 1 iA May 69 - 555 PBX Installation Document includes 536-550-210PT Appendix 1 Issue A May 69 - 555 PBX Installation, PRE-CABLED 60 LINE 555 PBX - FOR AMPHENOL CONNECTION - using a hundred pair cable or four 25 pair cables equipped with KS-16689 L3 plugs. From Pacific Telephone. Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> https://www.telephonecollectors.info/index.php/browse/document-repository/bsp-bell-system-practices-by-doc/bsp-categories-by-later-division-number-by-doc/530-559-private-branch-exchanges/536-division-500-series-pbx/12979-536-550-210-i4-mar70-555-pbx-installation?format=html Document includes 536-550-210PT Appendix 1 Issue A May 69 - 555 PBX Installation, PRE-CABLED 60 LINE 555 PBX - FOR AMPHENOL CONNECTION - using a hundred pair cable or four 25 pair cables equipped with KS-16689 L3 plugs. From Pacific Telephone. Contributed by Steve Cichorsky. Processed by Remco Enthoven and Paul Fassbender.

]]> paul-f@verizon.net (Paul F) 536 Division - 500 Series PBX Thu, 21 Mar 2019 14:32:48 -0700