Maintenance Architecture
555-233-143
1-24 Issue 1 May 2002
Facility Interface Codes
A Facility Interface Code (FIC) is a 5-character code (United States only) that
provides the technical information needed to order a specific port circuit pack for
analog private lines, digital lines, MTS lines, and WATS lines.
Table 1-13 through Table 1-15 on page 1-24 list the FICs. Included are service
order codes, Ringer Equivalency Numbers (RENs), and types of network jacks
that connect a line to a rear panel connector on a carrier.
Table 1-13. Analog Private Line and Trunk Port Circuit Packs
Circuit Pack FIC
Service
Order Code
Network
Jack
TN742 and TN747B Off-Premises
Station Port, and TN746B Off- or
On-Premises Station Port
0L13C 9.0F RJ21X
TN760/B/C/D Tie Trunk TL31M 9.0F RJ2GX
Table 1-14. Digital Trunk Port Circuit Packs
Circuit Pack FIC
Service
Order Code
Network
Jack
TN1654 and TN574 DS1 Converter; TN722B
DS1 Tie Trunk; and TN767 and TN464 DS1
Interface
04DU9B,C 6.0P RJ48C
and
RJ48M
Table 1-15. MTS and WATS Port Circuit Packs
Circuit Pack FIC
Ringer
Equivalency
Number (REN)
Network
Jack
TN742 and TN746B Analog Line 02LS2 None RJ21 and
RJ11C
TN747B Central Office Trunk 02GS2 1.0A RJ21X
TN753 DID Trunk 02RV2-T 0,0B RJ21X
TN790 Processor 02LS2 1.0A RJ21X
TN1648 System Access and
Maintenance
02LS2 0.5A RJ21X
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