6100 BSC Programming Manual

Writing Applications that Use 6100 BSC
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| |
| |
| Called Station Calling Station |
| |
| / |
| READ | |
| request | \ |
| | <------ ID ENQ | WRITEREAD |
| \ | request |
| / | |
| WRITEREAD | ID ACK 0 ----> | |
| request | / |
| | \ |
| \ <------ msg | WRITE request |
| |
| |
| The underscore shows the information applications |
| supply and receive. In each case, the information |
| resides in the text field of the request/response |
| buffer (see Figure 3-9). |
| |
| In the figure, the calling station follows ID |
| exchange with its first message block; it could |
| also have used a READ request to decline the bid |
| with EOT. |
| |
| |
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Figure 3-2. ID Exchange
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