Huawei U-SYS MRS6100 - Page 34

Technical Manual
U-SYS MRS6100 Media Resource Server
Chapter 5 MGCP and SIP
Huawei Technologies Proprietary
5-9
Serial
No.
Command
name
Code Description
2
CreateConnecti
on
CRCX
From MGC to MRS, used by the call agent to
associate an endpoint with a specified IP
address and UDP port. Apart from that, a
CreateConnection command is also sent to
the remote endpoint, which is required to
create the connection between the two
endpoints.
3
ModifyConnecti
on
MDCX
From MGC to MRS, used to modify
parameters of established connections.
4
DeleteConnecti
on
DLCX
From MGC to MRS and MRS to MGC, used
to delete an existing connection.
5
NotificationReq
uest
RQNT
Used to instruct the gateway to monitor
specific events on a specified endpoint. If it
happens, the call agent will be notified.
6 Notify NTFY
From MRS to MGC, used by the gateway to
notify the call agent that a specific event
requested to monitor takes place.
7 AuditEndpoints AUEP
From MGC to MRS, used by the call agent to
audit the status of an endpoint or a group of
endpoints.
8
AuditConnectio
n
AUCX
From MGC to MRS, used by the call agent to
audit the status of a connection on an
endpoint.
9
RestartInProgre
ss
RSIP
From MRS to MGC, used by the gateway to
notify the call agent that the gateway, or a
group of endpoints managed by the gateway,
is out of service or in service.
II. Response
All MGCP commands require responses. The response carries a return code which is
an integer, which can be within one of the following ranges:
100–199: indicates a provisional response.
200–299: indicates a successful completion of the command.
400–499: indicates that a transient error occurs.
500–599: indicates that a permanent error occurs.
Whether to return response parameters depends on specific commands.
Table 5-5 gives response codes that have been defined.