365-575-102 Acceptance: NTP-009
Issue 8.0, July 2002 Page 1 of 12
Accept Dual Ring Interworking (DRI) Connections
to/from an FT-2000 Ring
DO ITEMS BELOW IN ORDER LISTED . . . . . . . FOR DETAILS, GO TO
1. Overview: This procedure verifies path integrity as the path enters and/or
leaves the local FT-2000 ring. Figures 1 through 5 show different path
possibilities for the local FT-2000 ring. Every external network may be
different in the way it protects path integrity; therefore, it is imperative that
the active path and standby path(s) be known.
Required Test Equipment:
Craft Interface Terminal (CIT)
Wrist Strap
Microwave Logic's ST-112 SONETest Transmission Analyzer, or
Tektronix CTS-710 SONET Transmission Analyzer, or
Tberd 310 SONET Transmission Analyzer, or
Cerjac 156 SONET Transmission Analyzer, or equivalent.
!
WARNING:
Unterminated optical connectors may emit invisible laser radiation. Eye
damage may occur if beam is viewed directly or with improper optical
instruments. Avoid direct exposure to beam.
!
CAUTION:
Use a static ground wrist strap whenever handling circuit packs or working
on an FT-2000 add/drop-rings terminal to prevent electrostatic discharge
damage to sensitive components. See "Electrostatic Discharge (ESD)
Considerations" in Trouble Clearing: TAD-100.
NOTE:
This procedure is used to test an individual path through a local FT-2000
ring, but keep in mind that a typical FT-2000 ring will have many more
paths and DRI cross-connections than what is shown in Figures 1 through
5.
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