Caption: FIGURE 3: Effect of the noise in MAC relative to DS0
of a 16-dof model.
Gaithersburg, MD, June 25, 2014 --(PR.com)-- GL Communications Inc., announced today the release of its latest product LightSpeed1000[TM] with Channelized Emulation and Analysis of T1s and E1s - With its unique architecture, literally thousands of DS0s
within T1s and E1s can be accessed directly within an optical SONET or SDH structure - with ease for emulation and analysis.
The add-drop multiplexer shares high- and low-speed port capabilities with the terminal multiplexer, but can be equipped to perform DS0
as well as DS1 grooming.
From there, discrete DS0s
could be broken out by the IXC's DACS and routed via its tandem switch to the various sites.
Hodgson discovered the testing problem when he realized the carrier planned to carry his service as eight DS0
channels, not as a single block.
I can sit at the head end at a computer terminal and start at one location, putting that DSI slot number in the DS0
slot number, connect it into an unrelated slot number, and it will find its way through.
ADPCM done with Tellabs equipment compresses a DS0
circuit to 32kb/s, so instead of 24 channels on a T1, they get 48.
This equipment allows the carrier to switch a user's DS0
to any available time slot in a DS1 while maintaining the synchronization, framing and control needed for each digital trunk.
Hekimian Laboratories recently introduced a family of digital communications test equipment that provides remote performance monitoring and testing for DS1, DS0
and subrates carried on T1 facilities.
While robbed-bit signaling imposed an imperceptible distortion when the least-significant bit in each of the 24 DS0
channels of every sixth frame was stolen for a signaling indicator, the ESF format imposes no penalty except that more frames must be examined before synchronization can be established.
Hypermapper aggregates up to 8064 DS0s
, 336/252 DS1/E1s or 24 DS3/E3 channels and maps them for transport over OC-3/OC-12 SONET/SDH.