3Com VCX v7111 User Manual page 381

can be configured in the range of 10 Hz to 200 Hz with a 5 Hz resolution. Each of the ringing
pattern cadences is specified by the following parameters:
Burst Ring On Time: Configures the cadence to be a burst cadence in the entire ringing
pattern. The burst relates to On time and the Off time of the same cadence. It must
appear between First/Second/Third/Fourth string and the Ring On/Off Time This cadence
rings once during the ringing pattern. Otherwise, the cadence is interpreted as cyclic: it
repeats for every ringing cycle.
Ring On Time: specifies the duration of the ringing signal.
Ring Off Time: specifies the silence period of the cadence.
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, the default ringing tone (0) is played.
The distinctive ringing section of the ini file format contains the following strings:
[NUMBER OF DISTINCTIVE RINGING PATTERNS]: Contains the following key:
Number of Distinctive Ringing Patterns defining the number of Distinctive Ringing
signals that are defined in the file.
[Ringing Pattern #X]: Contains the Xth ringing pattern definition (starting from 0 and not
exceeding the number of Distinctive Ringing patterns defined in the first section minus 1)
using the following keys:
Ring Type: Must be equal to the Ringing Pattern number.
Freq [Hz]: Frequency in hertz of the ringing tone.
First (Burst) Ring On Time [10 msec]: Ring On period (in 10 msec units) for the
first cadence on-off cycle.
First (Burst) Ring Off Time [10 msec]: Ring Off period (in 10 msec units) for the
first cadence on-off cycle.
Second (Burst) Ring On Time [10 msec]:– Ring On period (in 10 msec units) for
the second cadence on-off cycle.
Second (Burst) Ring Off Time [10 msec]: Ring Off period (in 10 msec units) for the
second cadence on-off cycle.
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
fourth cadence on-off cycle.
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3Com VCX V7111 VoIP Gateway User Guide
381