Lucent Technologies FT-2000 OC-48 User Manual

Control, Transmission, and Synchronization Interfaces
5-24 Issue 8.0 July 2002
Phase Locked/Phase Locked Configuration 5
In the phase locked/phase locked configuration, both FT-2000 OC-48
Point-to-Point or Add/Drop-Rings Terminals time their transmitted signals from
internal oscillators that are locked to the DS1 external synchronization reference.
Since this configuration requires local office clocks at each end terminal, it is most
suited to interoffice applications. The network may have all DS1 references
traceable to a common primary reference source (for example, outstate trunking)
or to multiple primary reference sources (for example, a carrier-to-carrier
interface). The use of multiple primary reference sources is referred to as
plesiochronous operation (Figure 5-13).
The phase locked/phase locked configuration applies to all OC-48 applications
(with or without the FT-2000 OC-48 Repeater Bay).
Figure 5-13. Phase Locked/Phase Locked Configuration
Stratum 3 or better Stratum 3 or better
May be Plesiochronous
FT-2000 FT-2000
OC-48
CO CO
DS3 DS3
Phase LockedPhase Locked

Lucent Technologies FT-2000 OC-48 Specifications

General

Brand	Lucent Technologies
Model	FT-2000 OC-48
Category	Network Hardware
Language	English