Adtran 1200291L1 사용자 설명서

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Chapter 3. Configuration
61200659L1-1
MX2800 STS-1 User Manual
3-3
NETWORK INTERFACE
Select 
N
ETWORK
 I
NTERFACE
 to access the network configuration 
parameters (see Figure 3-3). Configure the MX2800 STS-1 
network settings to match the STS-1 signal received from the 
service provider.
Figure 3-3.  Network Configuration Menu
STS-1 Configuration
Use the 
STS-1 C
ONFIGURATION
 selections described below to 
configure the STS-1 network settings to match your application. 
Line Length
Set the line length to reflect the physical length of the STS-1 
network line. Set to 
L
ONG
 if the cabling distance is between 
225-450 feet; set to 
S
HORT
 if the distance is less than 225 feet.
Timing
Selects the source of timing used to derive the transmit signal. The 
MX2800 STS-1 has three modes of timing operation: 
L
OOP
F
REE
-
R
UN
, and 
E
XTERNAL
L
OOP
 timing configures the unit to recover 
clocking from the STS-1 receive signal. Loss of the STS-1 receive