Carrier Access 1750 user manual OC-12c/STM-4c, Options Comment

Configuration

OC-12c/STM-4c

OC-12c/STM-4c

Choose the slot (A or B) containing the OC-12c/STM-4c to be configured and a parameter input screen appears. The table below is a guide to parameter configuration.

Item	Options	Comment
Port Mode	On-line	This field is a status indicator and the items displayed are
	Off-line	the result of configuration (or other) actions.
	Test Download Standby
	Configuration Request
	Broken
Framing Type	SONET	SDH is for International ITU applications. SONET is for
	SDH	US applications.
Transmit Timing	Recovered	Recovered means from SONET.
	BITS	BITS impedance matching is a hardware function; see
		NIM Installation, Chapter 3. BITS is tied to the local in-
	Local	house timing source.
		Local is on-board Stratum 3 timing source.
SONET Tx	Enable	If SONET Tx is enabled, framing is enabled; if SONET
	Disable	Tx is disabled, framing is removed (i.e., SONET Tx is all
		zeroes).
Loopback Mode	Normal	Normal is no loopback.
	Terminal	Terminal is a loopback from the ATM interface to the
	Local	user equipment.
		Local is a loopback before NIM processing to the fiber
	Remote	link. Remote is a loopback from the receive fiber to the
		ATM before local processing.
ATM Payload	Both Scrambled	A technique used to prevent a long string of zeros. Both
Scramble Mode	Transmit Scrambled	ends of a connection must be configured the same for
	Receive Scrambled	operation.
	No Scramble
BITS Clock Alarm	Enable	Provides an alarm indication of loss of BITS clock at the
Loss	Disable	NIM IOM when enabled. A corresponding BITS LOS
		SNMP trap is generated if SNMP is configured properly.

If a second OC-12c/STM-4c is installed, repeat this process for the configuration. Follow the module-specific information above, as appropriate.

Broadmore 1750 - Release 4.6 7-39