Nortel DMS-100 Series Maintenance Manual page 151

The following table shows the Star Hub-supported ESA tones, cadence, and
frequency.
Figure 5-4 Star Hub supported ESA tones
Cadence
Tone type On
Dial N/A
Busy 0.5 s
Audible 2.0 s
Reorder 0.25 s
Idle N/A
Warble 2.0 s
ROH 0.1 s
Notify 0.25 s
Note: Idle tone uses a start cadence message. The Star Hub connects the receive path to a port
that provides idle tone.
Providing tones
The following steps provide tone to a subscriber:
1. The UMP card defines the tone required, the terminal identification and
2. When the UMP card receives the start cadence message, the card performs
The following steps clear the tone:
1. The ESA software in the RCP card sends a stop-cadence message to the
2. When the stop cadence message is received by the UMP card, the card
Off Frequency
N/A 350 Hz + 440 Hz
0.5 s 480 Hz + 620 Hz
4.0 s 440 Hz + 480 Hz
0.25 s 480 Hz + 620 Hz
N/A 7f (hex)
4.0 s 516.1 Hz + 648.6 Hz
0.1 s 1400 Hz + 2060 Hz
+2450 Hz + 2600 Hz
0.25 s 350 Hz + 440 Hz
the cadence times.
the following:
a. If necessary, the current receive path connection of the terminal is
broken.
b. The receive path of the terminal connects to the appropriate port.
c. The indicated cadence for that tone is set up.
UMP card. This message indicates the terminal identification.
sends stop cadence messages to disconnect the terminal connection.
DMS-100 Family NA100 Star Remote System XPM15 and up
ESA maintenance overview 5-15
Frequency Frequency
stability level
±0.5%
–13 dBm
±0.5%
–13 dBm
±0.5%
–13 dBm
±0.5%
–13 dBm
N/A N/A
N/A N/A
±2.0%
+3 to –6 dBm
±0.5%
–13 dBm
Frequency
level
stability
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
N/A
N/A
±3 dB
±1.5 dB