Network Requirements - Toshiba Strata DK 280 Installation Manual

Table
2-3

Network Requirements

I
Facility interface Code
(Loop start line)
PEMU
TL31 M, 4 wire
(Type I, Tie line)
(Off-premises station)
RGLU (Ground or
Loop Start Line)
TL31 M, 4 wire
(Type I or [I Tie line)
TL32-Type II, 4 wire
RDTU (DS-lTTI)' (Note 2f)
RDDU (DID line)
Notes:
1. Only PESU circuits 1 and 2, and RDSU circuits 1
on PSTU, RSTU, provide OPS. PSTU/PESU must use OL 13A or equivalent line conditioning for OPS
connection. RSTU and RDSU must use OL 13A
with the 4 8 volt loop option PCB (R48S), OL 13A, OL 138, or OL 13C may be used for OPS connection,
2. When ordering DS- l f l l circuits, six items must be specified:
a. The number of channels per T1 circuit, fractional increments are normally 8, 12, or
service is 24 channels. Unused channels must be bit-stuffed.
b. The type of CO line assigned to each channel: Loop Start, Ground Start, tie (Wink or Immediate Start), DID
(Wink or Immediate).
c. 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 DK280 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.
d. Line Code Type: Alternate Mark Inversion (AMI) or Bipolar
normally specifies the Line Code to be used, either is adequate for DK280 T1 CO digital voice lines.
e. The customer must provide the Channel Service Unit (CSU) to interface the DK280 T1 circuit to the Telco
f. RDTU Network Channel Interface Codes: 04DU9-BN, 04DU9-DN, 04DU9- ISN, 04DU9-1 KN, 04DU9-1ZN.
2-6
Network Jack
RJ21 X
with R48S,-48V)
X
RJ21
-
4 provide off-premises-station (OPS) capability. All circuits
or
Ringer Equivalence
N/A
N/A
0.38
16
Zero Substitution (B8ZS). The
8
Universal Service
Order Code
N/A
N/A
AS.2
N/A
channels, full
provider
January 1996