boards.fm
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
3-229
Boards for HiPath 3000
Peripheral Boards
Interface specifications
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.
Transmit path
Four-wire transmit level -3.5 dBr
Four-wire receive level -3.5 dBr
Characteristic impedance 600 ohms
Frequency range 0.3 to 3.4 kHz, +/- 1 dB
Dielectric strength of speech wires against
ground
1 kV surge, 1.2/50 µs and 10/700 µs
Signaling
Type of E&M interface (programmable) 1, 1A, 1B, 2, 3, 5
Protocols
To ANSI/EIA/TIA-464-A, configurable Immediate start
Wink signal
Delay signal
Signaling method DP or DTMF
To Next Page
Loading...
Need help?
General