Specifications

Protocol Configuration Using Discrete Messages

This appendix provides guidelines for protocol configuration using individual messages.

A.1 Protocol Configuration Using Individual Messages

As an alternative to using the s7_mgt protocol configuration utility (see Dialogic

Distributed Signaling Interface Components – Software Environment Programmer's

Manual), it is possible to perform protocol configuration by building and sending

messages directly to the board. This approach means that it is necessary to write some

application code to handle configuration, but has the advantage that the application

can, if required, reconfigure the board without restarting the application.

Communication with the board is achieved by sending and receiving messages. This

process is explained in the Dialogic

Distributed Signaling Interface Components –

Software Environment Programmer's Manual that describes the basic principles of

modules and message passing. To configure the board using individual messages, the

following sequence should be used. The message sequence is shown diagrammatically

in Figure 2 Protocol Configuration Message Sequence Diagram.

Note: The format of the messages is described in Section 4, “Message Reference” on page 20.

1. Build and send an SSD Reset Request (SSD_MSG_RESET) to the SSD module. This

message contains the parameters required to initialize the SSD module.

2. Then build and send a Board Reset Request (SSD_MSG_RST_BOARD) for each

board in the system. This message contains the address (or identifier) of the board

and the name of the code file. It causes the board to be reset and the code file

downloaded. For each board, the application should wait until a Board Status

Indication (SSD_MSG_STATE_IND) is received and inspect the status field to

determine if the reset operation was successful. On failure, the user should check

carefully the ssds parameters and try again.

3. Build and send a Board Configuration Request (MGT_MSG_CONFIG0) to the

onboard management task (MGMT_TASK_ID) to configure the basic board

parameters. When using Dialogic

DSI SPCI Boards, the value of the config_type

parameter in the Board Configuration Request must be set to 2. For this version of

the message, the automatic configuration of MTP parameters is not supported.

Wait for the confirmation message and check the status.

4. To set up the LIU and port for the T1/E1 ports, the LIU Configuration Request

(LIU_MSG_CONFIG) should be used. Wait for the confirmation message for each

LIU and check the status.

For each link in the system:

5. Build and send a Layer 1 Configuration Request (MGT_MSG_L1_CONFIG) to set up

the physical configuration parameters for the link. This message should be sent to

the onboard management module. Wait for the confirmation message and check

the status.

6. Build and send an MTP2 Link Configuration Request (SS7_MSG_CONFIG) to set up

the MTP2 configuration parameters. See the MTP2 Programmer’s Manual for the

message definition. Wait for the confirmation message and check the status.

7. Build and send an MTP3 Module Reset Message (MTP_MSG_RESET) to reset the

MTP3 module. See the MTP3 Programmer’s Manual for the message definition. Wait

for the confirmation message and check the status.