5.7. Identification (I) Field

The identification field (or simply the I field) identified in Figure 5.4 contains four components as shown in Figure 5.7. The components are

  • Message Type Field (1 octet)

  • Revision Number Field (1 octet)

  • Vendor ID Field (8 octets)

  • Bit-encoded parameter field

Figure 5.7. Identification field structure.

The message type is one of the message or command types defined earlier. The message type list and the corresponding bit encoding are provided in Table 5.3.

The revision number field is a single octet that identifies the revision number of the G.994.1 Recommendation that the equipment conforms to. Note that the revision ...

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