Nortel DMS-100 Series Maintenance Manual page 72

2-52 Star Remote System hardware
The following are features of the coin and ringer function of the card:
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TSS backplane, card cage, and terminal blocks
The TSS backplane provides a connection between the following:
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TSS circuit card status indicators
The following figure shows the circuit cards with status indicators.
297-8353-550 Standard 05.01 March 2001
uses input dc voltage of -40 V dc to -60 V dc
supplies +52 V, -52 V, +130 V, or -130 V coin output voltage
generates ringing signal
provides over-voltage protection. The ringing generator stops when the
— +52 or -52 V output is ±58.2 V dc
— +130 V or -130 V output is ±143.3 V dc
provides low voltage detection and over current protection on +52 V, -52
V, +130 V, and -130 V outputs
power supply, ringer, and coin card
SMC card
LMU card
64 line cards
dc panel
EMI filter cards
seven main distribution frame (MDF) blocks. Each block contains ten
solid state lightning protectors.