363-206-305
Technical Specifications
Issue 3 June 2000
10-65
!
CAUTION:
This information is for a typical application only. Consult 801-525-168, DDM-2000 Floor Plan
Data Sheets, and T82046-30, Power Systems DC Distribution Circuit for Digital Transmission
System, for proper engineering of battery plant and feeders.
Terminal-to-Terminal Voice-Frequency
Transmission
10
The CUs used in the central office terminal (COT) and MSDT determine the voice-
frequency (VF) transmission characteristics. The specifications for POTS,
SPOTS
®
, and coin CUs are given in Table 10-29. Table 10-30 lists the
specifications for multiparty and frequency selective ringing (FSR) CUs.
Specifications for the dual ringing repeater channel unit are listed in Table 10-31.
Table 10-32 lists the specifications for 2- and 4-wire special services. Table 10-33,
Table 10-34, Table 10-35, and Table 10-36 list the specifications for quad POTS/
SPOTS
CUs. Table 10-37 and Table 10-38 list the specifications for the
SPQ
909
LP-POTS channel units.
∗
When the DDM-2000 FiberReach is configured to include a wideband shelf and a narrowband
shelf, this power requirement as well as the power requirement for specific channel units and the
appropriate wideband shelf configuration should be added to get the total power requirement.
â€
This number must be added to the power requirement for the narrowband shelf without channel
units to obtain the total power requirements for the narrowband shelf.
‡
Other channel units can be used, but the total power requirements must not exceed 37 watts for
an enclosed cabinet. However, 82 watts is allowed for a shelf with a heat baffle. These numbers
assume all lines off hook simultaneously. A more typical power drain is about one third of the
stated drain: equal to a traffic rate of 12.2.us.
§
The SPQ494 channel unit (Quad ISDN) consumes 4.2 watts of power. However, a maximum of
eight SPQ494 channel units can be installed in specified physical slots of the narrowband shelf,
due to the limit of DSOs carried by the four DS1 links to the host.
To Next Page
Loading...
Need help?
General
