Mediation - AudioCodes Mediant 1000 User Manual

have the same ID, the new signal is ignored.
Subtracting the termination from the call
When a signal is ended, a signal completion notification is sent only if:
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 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''.
When a CPT file is missing, the Mediant 1000 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}}}}}
7.2.2.8

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.
User's Manual 82
Digital Mediant 1000
Document # LTRT-66401