MP-1xx SIP
MP-1xx SIP User’s Manual 146 Document #: LTRT-65404
Third (Burst) Ring On Time [10 msec] – “Ring On” period (in 10 msec units) for the
third cadence on-off cycle.
Third (Burst) Ring Off Time [10 msec] – “Ring Off” period (in 10 msec units) for the
third cadence on-off cycle.
Fourth (Burst) Ring On Time [10 msec] – “Ring Off” period (in 10 msec units) for the
forth cadence on-off cycle.
Fourth (Burst) Ring Off Time [10 msec] – “Ring Off” period (in 10 msec units) for the
forth cadence on-off cycle.
Note: In SIP the distinctive ringing pattern is selected according to Alert-Info
header that is included in Invite message. For example: Alert-Info <Bellcore-
dr2>, or Alert-Info<http://…/Bellcore-dr2>. ‘dr2’ defines ringing pattern # 2. If
the Alert-Info header is missing, ringing pattern #1 is played.
7.1.2.1 Examples of Various Ringing Signals
Figure 7-3: Examples of Various Ringing Signals
[NUMBER OF DISTINCTIVE RINGING PATTERNS]
Number of Ringing Patterns=3
#Regular North American Ringing Pattern
[Ringing Pattern #0]
Ring Type=0
Freq [Hz]=20
First Ring On Time [10msec]=200
First Ring Off Time [10msec]=400
#GR-506-CORE Ringing Pattern 1
[Ringing Pattern #1]
Ring Type=1
Freq [Hz]=20
First Ring On Time [10msec]=200
First Ring Off Time [10msec]=400
#GR-506-CORE Ringing Pattern 2
[Ringing Pattern #2]
Ring Type=2
Freq [Hz]=20
First Ring On Time [10msec]=80
First Ring Off Time [10msec]=40
Second Ring On Time [10msec]=80
Second Ring Off Time [10msec]=400
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