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("Oh see!") A parallel logic language.

["Self-Description of Oc and its Applications", M. Hirata, Proc 2nd Natl Conf Japan Soc Soft Sci Tech, pp. 153-156, 1984].
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center-to-center, on center

The distance between the center line of one element, member, part, or component (as a stud or joist) and the center line of the next.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.


(1) See overclock.

(2) (Optical Carrier) The transmission speeds in SONET/SDH networks. See SONET. See also DS.

SONET CIRCUITSOptical  Electrical    SpeedChannel  Channel      (Mbps)

 OC-1      STS-1        51.84
 OC-3      STS-3       155.52
 OC-3c     STS-3c      155.52
 OC-12     STS-12      622.08
 OC-12c    STS-12c     622.08
 OC-48     STS-48     2488.32
 OC-192    STS-192    9953.28
 OC-768    STS-768   39813.12

 OC  = Optical Carrier
 STS = Synchronous Transport Signal
   c = concatenated
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References in periodicals archive ?
This frequency corresponds to the clock frequency of earlier systems (STM16 or OC48) and is available in multiplexing and demultiplexing as well as various types of test equipment.
Orconet.com, with its OC48 backbone and network design, is now offering monthly T1 access for $750 a month, which--at 1.54 Mbps--is more than 50 times faster than a typical 28.8 modem, includes the Internet connection, and is available throughout most of the West Coast.
AT&T customers can use its AT&T BusinessDirect customer portal to provision additional network capacity, with rates up to OC48 connection speeds.
At OC48 data rate it has a reach of up to 360km in the C band and 200km and the L band, the company said.