v = 0
c = INIP4212.18.62.1
m = audio 1234 RTP/AVP 0
v=0;
IP, 4;
IP - 212.18.62.1;
RTP;
RTP 1234;
- G.711,
g/.248
g (MEdia GAteway COntrol Protocol) IETF ( )
.248 ITU ( )
/.248 UDP, TCP, SCTP ATM.
g :
n (termination)
n (context).
() , , (endpoint) MGCP.
- ; , , , , .. . , , MGCP. , .. . - (null). , , .
, , . , - .
n . - , , .
n , IP- (, RTP-), . Softswitch Add Subtract, Add Subtract, , .
.
TerminationID
(Context) , . , . , , , . I
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|
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- . , , , ( ).
Add. Add I , , Add .
Move, Subtract.
:
n ContextID,
n ( ),
n ( 16 ).
/.248 , .
n Add (). Softswitch . Add , , .
n Modify () Softswitch .
n Subtract () . , . . RTP- , , ..
n Move () . , Add Subtract, . -
(2)
n AuditValue ( ) Softswitch , , .
n AuditCapabilities ( ) Softswitch , , . AuditValue , AuditValue , AuditCapabilities , .
n Notify () MG , Softswitch , . , , Softswitch MG, , Modify. , , RequestedID, Softswitch .
n ServiceChange ( ) MG Softswitch . , Softswitch Softswitch. Softswitch MG, , MG ServiceChange Softswitch .
|
|
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Megaco/H.248 , . / . , .
:
Descriptomame=<somelD>{parm=value, parm=value,...}
(2)
n , Modem, , , .
n , , .
n , Media, (-).
n , TerminationState, : ServiceStates EventBufferControl.
ServiceStates , . :
, .
EventBufferControl , .
n , Events, Requestldentifier , MG ( , .).
n , Signals, , .
n Topology, , . - , -, .. .
n Error , .
, Softswitch MG, , , , , , . TransactionRequest. :
TransactionRequest (TransactionID {
ContextID1 {Command, Command,... Command},
ContextID2 {Command, Command,... Command},
ContextID3 {Command, Command,... Command} })
TransactionRequest . , , TransactionRequest. TransactionReply. : TransactionReplv :
TransactionReplv (TransactionID{
ContextlD1 { Response, Response,... Response },
ContextID2 { Response, Response,... Response },
ContextID3 { Response, Response,... Response } })
TransactionRequest , , . TransactionPending ,
TransactionRequest . TransactionID - :
TransactionPending (TransactionID {.})
. , , MID {Message Identifier)
