Subject: [Megaco] difference between Cold Start and Registration

From: "Ryan Cho" <[email-masked]>
Date: Thu, 1 Aug 2002 23:36:52 +0900 (KST)

Hi, 

1. I want to know the difference between "Cold Start" and "Registration" of MG from the MGC's point of view. Does it depend on the presence of 'ServiceChangeAddress' parameter of SvcChange command ?

2. In registration, if UDP is used as transport protocol, initial SvcChange request with new port number in ServiceChangeAddress parameter is sent to default port number. (this means MGC might open UDP (client) socket for new MG's port)
Is MGC alwalys send reply with new MGC port number in ServiceChangeAddress ? (and this means MGC might open another UDP (server) socket for new MGC port number) 

2. Generally, the signal applied specific termination might be clear by sending  modify command with null signal descriptor such as  Signals = {}. What about event ? especially with embeded signal ?

for example,
suppose physical termination is applied event like this

Modify = Trunk1/Line1 {
   Events = 100 {r2/sz Embed { Signals {r2/sa}, Events=101 { r2/clear  Signals { r2/clear }, r2/address}}
}

the signal described below can be replaced without cancellation of signal ?

Modify = Trunk1/Line1 {
   Signals = {r2/sz},
   Events = 200 {r2/sa Embed {Signals {r2/address {si = 1234, di = 5678}},Events = 201 {r2/clear, r2/answer}
}

Thanks for your comment in advance.

Ryan