Siemens Hicom 150 E Office Service Manual page 105

Hicom 150 E Office Rel.1.0 Service Manual - 3.3 Peripheral boards
Figure 3-36 TMOM (S30810-Q2535-X)
The relays displayed in
PSE interface
The following standards have be implemented for the connection of single-call and enhanced radio
paging equipment:
ESPA 4.4.3
ESPA 4.4.5 (6-wire)
a, b, c, d interface
Figure 3-37 displays a simplified representation of the PSE interface with all signals. The type of
signalling depends on the PSE type.
A1/B1: Outgoing and bidirectional traffic, loop current = 14 to 60 mA
A2/B2: Incoming traffic, loop current = 14 to 60 mA
C1: Busy signal with a/b/c connection:
Loop current with low impedance = 390 W, loop current = 14 to 60 mA
Loop current with high impedance = Approx. 8.7 kW, loop current = 3 to 7 mA
D1: Busy signal with a/b/c connection. Potential = - 48 V.
This can be used as a return line for the c-wire.
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Figure 3-36 are not supported.