Carrier Access 1750 manual

Structured DS3 SAM

Item	Options	Description
CBR Service Type	Structured No CAS	Structured No CAS allows DS0 (fractional)
	Structured with CAS	allocation without Channel Associated Signalling
	Unstructured	(CAS).
		Structured with CAS allows DS0 allocation with
		CAS enabled, using robbed-bit signalling.
		Unstructured assigns all the timeslots to one VP/
		VC. Structured No CAS and Structured with
		CAS can assign a timeslot or group of timeslots
		to a VP/VC.
		Unstructured allocates all 24 DS0s to the DS1,
		using the entire DS1 bandwidth regardless of
		data content.

Frame Type	Unframed	No framing occurs.
	Extended Superframe	Superframe groups 12 DS1 frames together.
	Superframe	Extended Superframe groups 24 DS1 frames
		together. The equipment attached must be set to
		the same frame type as chosen here.

BERT	Off	BERT test can only be performed when the port
	21e-11 PRBS	is configured for C-bit parity framing. This
	21e-15 PRBS	causes the port to generate pseudo-random test
	21e-20 PRBS	patterns to the service side DS3 physical
	21e-23 PRBS	connection.

Table 7-12: Structured DS3 SAM DS0 Loopback Tributary Configuration

Item	Options	Description
DS0-0 (0-23)	Normal	Normal Mode is no loopback.
	Remote	Remote Loopback sets a loopback to the service
		side.

7-56	Broadmore 1750 - Release 4.6

Carrier Access 1750 user manual Structured DS3 SAM DS0 Loopback Tributary Configuration