363-206-285
Technical Specifications
10-6 Issue 3 June 2001
â– Format Specification
The T1EXT BBF6 low-speed interface can be provisioned for the following
formats: clear channel (default), SF as specified in
ANSI
T1.403-1989
, or
ESF as specified in
ANSI
T1.403-1989. In the case of SF or ESF format
selections, T1EXT performance information is collected by monitoring the
associated T1EXT framing format.
â– Alarm Thresholding
The following parameters are monitored at the T1EXT interface:
— Loss of signal
— Line coding violations.
The alarm level for each of the monitored parameters can be provisioned to
CR, MJ, MN, or status. B8ZS and AMI coding violation failure thresholds
are user settable to
10
-3
,10
-6
,10
-7
,or10
-8
BER.
â– Performance Monitoring (PM) (see Table 10-23)
— Near-end T1EXT path parameters (ES, SES, and UAS) for SF or
ESF framed signals incoming to the DSX-1
— Far-end T1EXT path parameters (ES, SES, and UAS) for ESF
framed signals using performance report messages (PRM)
incoming from the DSX-1.
— Coding violations (CV) for near-end and far-end
— T1EXT line PM monitoring and ES reporting
LAN Interface (BBF9) 10
â– Electrical Specification:
The BBF9 LAN circuit pack provides a single 10/100BaseT, IEEE 802.3
compliant interface. The LAN port performs protocol transparent filtering
and bridging of incoming MAC frames. MAC frames with a destination
address on the local bus are filtered by the BBF9 to prevent unnecessary
transmission of frames over the wide area network (WAN). The LAN
interface autonegotiates mode (full/half duplex) and speed (10/100 Mb/s)
when interfacing with other 802.3 compliant devices over twisted pair
media. The circuit pack occupies two adjacent low-speed slots and uses
from one to 8 DS1 signals to provide native mode LAN transport through a
SONET WAN.
â– LAN port:
— 10/100BaseT IEEE 802.3 compliant
— RJ-45 faceplate connector
— Cat-3 or CAT-5 UTP (unshielded twisted pair) medium
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