ADTRAN ESU 120e user manual From the NI. See ESU 120 Clock Sources on page 5-5 for more

Chapter 5. Configuration Menu

Menu Item	Description
	• Note that if CAS/TS16 is enabled, TS16 may not be
	mapped to a port, and will be forced to “Idle”. When
	CAS/TS16 is disabled, and TS16 is mapped to a port, the
	data in TS 16 will be mapped through from the network
	to the mapped port. For common channel signalling ap-
	plications, CAS/TS16 should be disabled and TS16
	mapped to the drop port. TS16 may also be mapped to
	the base Nx56/64 or an option module data port.
	• When CAS/TS16 is enabled, TS16 is forced to idle in DS0
	Map A and B and may not be mapped. This configura-
	tion must be used if there are multiple signalling-capable
	ports that are mapped to the Network Interface. For ap-
	plications where the Base Drop Port requires channel as-
	sociated signalling, (connection to a PBX, for example)
	CAS/TS16 must be enabled and TS16 left idle in the DS0
	Map.
CRC-4	When this option is enabled, the CRC-4 checksum bits are
	transmitted in the outgoing E1 data stream. Also, the
	received signal is checked for errors.
	Choices: Enable, Disable
RFA Gen	When enabled, remote frame alarm is transmitted toward
	the Network during alarms.
	Choices: Enable, Disable
Timing	Selects the clock source for transmission toward the network
Mode	from the NI. See ESU 120 Clock Sources on page 5-5 for more
	information.

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