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4. Configuration Options
4-34
September 2002 9128-A2-GB20-80
Configuring Physical Interfaces
Characteristics for physical interfaces are explained in the following sections:
Configuring the Network Interface
Configuring a User Data Port (CSU/DSUs)
Configuring the DSX-1 Interface
Configuring the ISDN DBM Interface
Configuring the Network Interface
When configuring the physical characteristics for the network interface, select
Physical from the Network menu (see Table 4-6, Network Physical Interface
Options).
Main Menu
→
Configuration
→
Network
→
Physical
Table 4-6. Network Physical Interface Options (1 of 4)
Line Framing Format
Possible Settings: D4, ESF
Default Setting: ESF
Specifies the framing format for transmitted and received signals on the T1 network
interface.
D4 – Uses D4 framing format.
NOTE: This setting is not recommended by network carriers. False yellow alarms may
occur after traffic has been running and the channel returns to idle, or when there is
light traffic when other settings are selected. ESF format does not create this problem.
ESF – Uses Extended Superframe framing format.
Line Coding Format
Possible Settings: AMI, B8ZS
Default Setting: B8ZS
Specifies the line coding format for the network interface.
AMI – Uses Alternate Mark Inversion (AMI) line coding format.
B8ZS – Uses Bipolar 8 Zero Substitution (B8ZS) line coding format.