Appendix — Specifications
Reserve Power
168 Strata CIX General Description 12/07
6. When ordering DS-1/T1 circuits, six items must be specified:
• The number of channels per T1 circuit, fractional increments are normally 8, 12, or 16 channels, full service is
24 channels. Unused channels must be bit-stuffed.
• CO line types assigned to each channel: Loop Start, Ground Start, Tie (Wink or Immediate Start), DID (Wink
or Immediate).
• Frame Format Type: Super Frame (SF) or Extended Super Frame (ESF). The T1 provider normally specifies
the Frame Format to be used, either is adequate for CO digital voice lines. ESF provides a higher level of
performance monitoring, but requires trained personnel and the ESF CSU normally costs more than an SF
only CSU.
• Line Code Type: Alternate Mark Inversion (AMI) or Bipolar 8 Zero Substitution (B8ZS). The T1 provider
normally specified the Line Code to be used, either is adequate for T1 CO digital voice lines.
• The customer may have to provide the Channel Service Unit (CSU) to interface the CIX T1 circuit to the Telco
T1 circuit. (CSUs are a Telco requirement.)
• RDTU Network Channel Interface Codes: 04DU9-BN, 04DU9-DNZZ, 04DU9-1SN, 04DU9-1KN, 04DU9-
1ZN.
7. For information on how to order ISDN PRI circuits, you should refer to the Toshiba ISDN Training CBT. ISDN
circuits may require a customer-provided CSU for PRI and/or Terminal Adapter or Network Terminal units for
BRI. In U.S. CSU/TAs must be UL-listed in the U.S. In Canada, they must be CSA certified.
8. RPTU2 is required for Strata Net private networking.
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