Rolm 9751 Config Manual

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I'm attempting to integrate a Rolm 9751 9005 to a Unity Connecitons via PIMG. Unity is answering and accepting the message. It indicated the MWI is on. However, on the Rolm phone no MWI, no stuttertone. In the PIMG, I never see the 2 MWI ports in use. ROLM 9751 9005 System Monitor Input/Output Card emulation. @@ -558,6 +561,9 @@ static MACHINECONFIGSTART( r9751 ). ROLM Halloween 1993 Skit Prize Presentation. ROLM - A Siemens Company. Santa Clara, California. Halloween, 1993. The prize presentation for the 1993 'Halloween. ROLM Corporation, Competing with Giants Recorded May 19, 2004 This roundtable discussion by the four founders of ROLM Corporation will cover its founding in 1969, the.

Columbia's Rolm telephone system was installed in 1988, replacing its previousAT&T Centrex service. By 1988 Rolm had been bought by IBM. IBM laterpartnered with Siemens AG, which later bought the Rolm subsidiary from IBM.

From the computing viewpoint, the advantages of an in-house telephone systemwere (1) Columbia's own wiring plant, connecting all the Morningside Heightsbuildings, both on and off campus; and (2) digital telephones providing19200 bps data service to the central computers. When the project wascomplete in November 1988, 75 buildings had been connected by 6000 miles ofcable; 100,000 pairs of riser and station cables were installed, connectedto 13,000 voice/data jacks, 3500 of them in dormitories. There were dozens,perhaps hundreds, of excavations and street crossings, including Broadwayand Amsterdam Avenue. The Rolm wiring plant provided the basis foruniversal campus networking, initially 10BaseT 10Mbps twisted-pair Ethernetover Cat 3 (Category 3) unshielded twisted pair copper wiring. Over theyears the wiring is being upgraded to Cat 5 or higher, building by building.

Rolm data phones look like regular phones, but with female RS-232 DB-25connectors in back. Shown here is a model RP624 with data module. Theother end of the serial-port cable can be connected to a terminal or desktopcomputer such as a PC or Macintosh, for which Columbia'sKermit software was providedto allow interactive terminal connections and file transfer with our DEC,Unix, and IBM mainframes.

Rolmphones are digital, not analog like traditional phones. Timedivision multiplexing allows for separate voice and data connections on thesame physical circuit. When the PBX was first installed, it replaced ourprevious data switch, a Gandalf PACX, as well as ourAT&T Centrex voice system. Great racks of Data Communication Modules (DCMs)were set face-to-face against great racks of Ethernet terminal servers,connected by octopus cables. The terminal servers, of course, accessed ourcentral computers by TCP/IP (Telnet), so it was no longer necessary for eachcentral computer to have large numbers of serial ports. Each data circuitwas fixed at 19200 bps, which seemed pretty fast in 1988 but not for long.Furthermore, the digital protocol used between the phone and the CBX, calledRolmLink, did not provide any form of flow control. Rolm data connectionswere big business until the mid-1990s, by which time Ethernet was ubiquitous(thanks to the Rolm wiring plant!), at which point the Rolm data featurefell into disuse.

The CBX itself is installed on the first floor of Low Library, in the centerof campus. It consists of 10 CBX and 10 PhoneMail 'nodes', plus disks, tapes,terminals, etc, and the Main Distribution Frame (MDF), where all 50,000 wirepairs from the Morningside Rolm telephone jacks terminate. It is administeredby the Office of Communications Services (OCS), which is part ofAdministrative Information Services (AIS), which formerly, together with whatis now Academic Information Systems (AcIS), formed the Columbia ComputerCenter. [NOTE: By 2010 all these organizations and acronyms are ancienthistory, in the neverending rounds of reorganization and rebranding, but theequipment itself is still where it was and still operational.]

Here are some February, 2001, photos supplied by Ben García of Columbia's Office ofCommunications Services of the Rolm machine room in Low Library; clickeach image to enlarge it:

Rolm 9751 Config Manual Pdf

  • Sachnoff, Neil, Secrets of Installing a Telephone System,Telecomm Library Inc, New York(1989) [41].
Frank da Cruz / [email protected] /Columbia University Computing History / Jan 2001 /Upated 2011, 2020
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This article describes how to determine which specific model number Dialogic 1000 Media Gateway (DMG1000) or Dialogic 2000 Media Gateway (DMG2000) you may be using. The article will also provide information on determining the firmware version in use and downloading the latest DMG1000 or DMG2000 firmware.

In order to determine the the model DMG1000 or DMG2000 in use , the config.ini will need to be exported and viewed within a text editor.

How to Export config.ini information

  • Click the “Import/Export” link on the left hand side of the DMG’s web interface
  • Click the “Export All Settings (config.ini)”
  • Save the config.ini file to your local machine
Rolm 9751 Config Manual

Determining the model of DMG1000 or DMG2000 in use

  • Open the config.ini in a text editor.
  • Look for specific data (see below for a DMG2000 example) in the config.ini to determine the model of your DMG.
  • For DMG2000 series:

If the line below exists in the config.ini, this is a DMG2000 series

Then search for 'numTelPorts =' string.

Rolm 9751 Config Manual

numTelPorts valueCorresponding DMG2000 Model Type
numTelPorts =1DMG2030DTIQ
numTelPorts =2DMG2060DTISQ or DMG2060DTISQV34
numTelPorts =4DMG2120DTISQ
  • For the DMG1000 series:

If the line below exists in the config.ini, this is a DMG1000 series

; Telephony Switch Type:

Telephony Switch TypeCorresponding DMG1000 Model Type
Rolm_8000 Rolm_9751_SW9005 Rolm_9751_SW9006 DMG1008RLMDNIW
M1 Norstar Optiset_300ECS Optiset_300E Lucent Magix NEC_IMG NEC_IMX NEC_NEAX DMG1008DNI


* For an analog DMG1000 gateway, to determine if you have a DMG1004LSW or DMG1008LSW, search for

Rolm 9751 Config Manual Download

  • If the number of ports = 4, you have a DMG1004LS
  • If the number of ports = 8, you have a DMG1008LS
Rolm 9751 Config Manual

Determining the firmware version in use on the DMG1000 or DMG2000

In the config.ini. search for the line:

Rolm 9751 Config Manual User

Running with rifles. If this does not say 6.0.SU9, you do not have the latest firmware (as of April 2013).

Downloading the most recent firmware version for the DMG1000 or DMG2000

The most recent version of firmware can be found at : Software Download

Upgrading the DMG1000 or DMG2000 Firmware

Inside the downloaded zip file, there is a readme file, DMG 6.0 Upgrade Instructions.doc, that explains how to upgrade to the most recent firmware.