Siemens HiPath 3000 Service Manual page 295

Interface specifications
Transmit path
Four-wire transmit level
Four-wire receive level
Characteristic impedance
Frequency range
Dielectric strength of speech wires against
ground
Signaling
Type of E&M interface (programmable)
Protocols
To ANSI/EIA/TIA-464-A, configurable
Signaling method
Characteristics of the signaling protocols
Connecting two switching units via a tie trunk requires a protocol supported by both systems.
HiPath 3750 and HiPath 3700 supports:
"Immediate start" protocol
●
No seizure acknowledgment; with answer signal.
This is the most widely used protocol internationally.
"Wink signal" protocol
●
Proceed to send signal using "wink" signal; with answer signal.
This protocol is the same as the "immediate start" protocol except that it also features a
proceed-to-send signal. It is most useful for connecting systems that are not immediately
ready for digit input.
"Delay signal" protocol
●
Dial delay with "delay" signal; with answer signal.
This protocol permits the transmission of dialing information to be delayed until the receiv-
ing exchange is ready. It differs from the wink signal protocol only in that the remote system
returns a backward signal immediately after seizure even if it is not ready for digit input.
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
-3.5 dBr
-3.5 dBr
600 ohms
0.3 to 3.4 kHz, +/- 1 dB
1 kV surge, 1.2/50 µs and 10/700 µs
1, 1A, 1B, 2, 3, 5
Immediate start
Wink signal
Delay signal
DP or DTMF
boards.fm
Boards for HiPath 3000
Peripheral Boards
3-229