Huawei U-SYS MRS6100 Technical Manual page 63

Technical Manual
U-SYS MRS6100 Media Resource Server
Request
messages
REGISTER
OPTIONS
II. Response messages
Response messages are used to respond to request messages, indicating the
success or failure of calls. Different classes of response messages are distinguished
by status codes. The status-code is a 3-digit integer. The first digit defines the class of
response. The last two digits describe the response in detail. Table 5-11 shows the
classification of response messages and their meanings.
Table 5-11 Response messages
Serial
No.
1xx
2xx
3xx
4xx
MG registers to MGC.
The OPTIONS request is used to query servers about their
capabilities.
Status-Code
Informational Indicating the request message has been received
(provisional) and is being processed
100 Trying
180 Ringing
181 Call Is being forwarded
182 Queued
The action is successfully received, understood, and
Success
accepted.
200 OK
Further action needs to be taken in order to complete
Redirection
the request.
300 Multiple choices
301 Moved permanently
302 Moved temporarily
303 See others
305 User proxy
380 Alternative service
The request contains Syntactical errors or cannot be
Client error
processed at this server.
400 Bad request
Huawei Technologies Proprietary
Message meanings
Message functions
5-38
Chapter 5 MGCP and SIP