Verilink Red Zone Encryption (REMS) (880-502423-001) Product Manual - Manual (Page 59)

Setting up external timing
Red Zone Encryption Management System (REMS) User Manual 5-9
Figure 5-5 External Timing Block Diagram of Near-end
In Table 5-1, REMS External Timing Configuration, two valid alternative
timing configurations are given, one in each row
Table 5-1 REMS External Timing Configuration
FBR BR
RD TPT
ST
15, 12
RPT SD
2,14
RPTC TT
24,11
RSC RS
4,19
3,16
MUX
TCTC TT
24,11
RD RCT
3,16
RT RTC
17,9
ST BSC
15,12
SD
2,14
Encryptor
(64 kHz reference
Red Zone Black Zone
synchronized
with RSC)
to T1 ESF
network
TCT
T1 ESF
from
network
Re-sync leads
EXT CLK
EXT CLK
Loop
or Ext.
timing
Internal
or
External
timing
Near-end MUX Near-end BRC Far-end BRC Far-end MUX
Loop Internal Loop Loop
Loop or External
a
a. Must be from same clock source as EXT input to near-end BRC, or RSC from the encryptor, or 64 KHz REF
(RSC) from FBR.
External Loop or External
b
b. Must be from same clock source as EXT input to near-end BRC.
Loop or External