AudioCodes Mediant 2000 User Manual page 120

The signal has the NotifyCompletion parameter and the completion reason
(TimeOut, Interrupted by Signal, Interrupted by Event) matches one of the
NotifyCompletion parameters.
The events descriptor contains the signal completion event (g/sc).
The notification includes the ID of the signal that was ended and the signal list ID if it
was a signal list.
Signal duration (For timeout signals only) can be defined as a parameter in the signal.
If omitted, a default value is used (refer to the package's description in the beginning
of this section).
Call Progress Tones must be defined by the user in a Call Progress Tones (CPT ID)
file. An off-line utility is supplied to convert this file to a binary file. Each tone has a
toneId in the file, used by MEGACO when playing the signal. For the correlation
between signal names and CPT file IDs, refer to the column, Map to CPT File of the
table, ''Generic Media Package - G'' on page 96.
When a CPT file is missing, the Mediant 2000 defines default values only for the
following signals:
Dial tone
Ringing tone
Busy tone
Announcements should also be prepared offline by users.
The following example shows a command that plays a list of announcements. When
the list is finished, a notify command is sent:
MEGACO/1 [172.16.8.88]
T=207{
C = 1 {
Modify = gws0c1 {
SG{SL=1234{an/apf{an=2},an/apf{an=3},an/apf{an=1,NC={TO,IBS}}}},
E=1001 {g/sc}}}}
And the Notify request:
MEGACO/1 [10.2.229.18]:2944
T=2015{
C = 1 {
O-N=gws0c1{
OE=1001{19700101T00003542: g/sc{
Meth=TO,SigId=an/apf,SLID=1234}}}}}
7.2.2.9 Mediation
Mediation in MEGACO connects two ephemeral terminations. This operation can be
used by a Call Agent to connect users with different coders or to connect two types of
users, such as ATM and RTP. The mediation operation requires up to two DSPs
according to the following rules:
When both users use the same coder, no DSP is allocated.
When one user uses a G.711, one DSP is allocated for the other user.
When both users use non-G.711 and different coders, two DSPs are allocated.
When one side uses RFC 2833 and the other does not, or the payloads of RFC
2833 are different, two DSPs are allocated.
User's Manual 120
Mediant 2000
Document # LTRT-69805