Siemens / Rolm 9751 PBX Phone System plus Telemate Call Accounting Server, APC Smart UPS (Uninterruptible Power Supply)
System Manuals, and (259) assorted Siemens Phones.
(111) Model RP-12
(75) Model RP-12 SL
(72) Model RP-612
(1) RP612 Reception Model.

ROLM SIEMENS 9751 MOD 10/40/50/70 ATI CARD 90666A

SIEMENS 97653 SLMQ-3 Q-2479

SIEMENS Q2192X TMDN-H HICOM

Rolm Asychronous Data Communications Module, M/N 42201 For use with Rolm Systems CBX Networks

ROLM 9751 MOD 10/40/50/70 9005 T1DN CARD 90635F

Many NASA centers have selected ROLM(TM) Computerized Branch Exchanges (CBX's) as their standard telephone exchange.
The ROLM 9751 CBX Model 70 with ROLM software release 9005 can inter-communicate as a 'multi-node' system over a multimode fiber optic link of 450 to 6,000 meters.
Singlemode fiber installations are not supported by ROLM. Two New Mexico-based NASA satellite ground terminals were already connected via a 6 kilometer singlemode fiber optic link.
The ROLM Inter-Node Link (INL) was converted from multimode LED transmitters to singlemode laser transmitters and two ROLM CBX systems were interconnected using the modified INL.
On activation, the system operated normally and has done so for six months. System testing indicates sufficient margin to drive 45 kilometers of singlemode fiber, an important benefit for widely separated facilities.
Rolm RP120 61000 Telephone
Compatible with all Siemens/ROLM standard digital systems from 8000 through Hicom 300E

created 01-17-2007
Last Update: .