Timing Options
C-7
GDC 048R154-000
In order for this application to work, the DTE device that acts as timing
source S1 must be the network source of timing. The DTE must not be
passing along timing that is derived from another source or from a rate
conversion.
Select DTE Timing when using the DeskTop T1 DSU in a private
network with the customer equipment supplying the clock.
Figure C-3
DTE Timing
Select the appropriate timing option for the customer
equipment: The DeskTop T1 DSU expects external timing on
the DTE interface Ext Clk lead.
NOTE
Receive
Buffer
Transmit
(Send)
Buffer
Clock
Translator
Clock
Translator
Network
Receive
T1 Data
DTE Receive
Data
Network
Send T1 Data
DTE Send
Data
1
2
4
3
5
6
7
S1
DTE Receive
Clock
DTE External
Clock
Recovered
Receive
T1
Clock
DeskTop T1 DSU
Timing
Source
