Page 836 - 5G Basics - Core Network Aspects

2 Transport aspects

The version number sent by the FTU-O is for version control and is FTU-O vendor specific information. It
shall contain up to 16 binary bytes.

The version number sent by the FTU-R is for version control. It shall contain the FTU-R firmware version and
the FTU-R model. Both shall be encoded in this order and separated by a space character, i.e., "<FTU-R
firmware version><space> <FTU-R model>". It shall contain up to 16 American standard code for
information interchange (ASCII) characters.

The serial number sent by the FTU-O is DPU vendor specific information. The combination of DPU system
vendor ID and DPU system serial number creates a unique number for each DPU. It shall contain up to 32
ASCII characters.

The serial number sent by the FTU-R shall contain the NT system serial number, the NT model and the NT
firmware version. All shall be encoded in this order and separated by space characters, i.e., "<NT serial
number><space> <NT model><space> <NT firmware version>". The combination of NT system vendor ID
and NT system serial number creates a unique number for each NT. It shall contain up to 32 ASCII
characters.

The auxiliary inventory information shall be assigned with respect to the same system integrator as
contained in the vendor ID. The syntax of this field is beyond the scope of this Recommendation.
The self-test results response shall contain the results from the most recent self-test procedure, initiated
either at power-up or by the perform self-test eoc command. The results shall be formatted as defined in
clause 11.2.2.6.1.

The initialization flags request and the initialization flags reset request eoc commands shall only be
supported from the FTU-O to the FTU-R.

The initialization flags and the initialization flags reset response shall contain the current value of the
initialization flags. The following initialization flags are defined:
– The "previous-loss-of-power" (PLPR) flag: This flag shall be set to 1 after a power-up of the FTU-R
due to an interruption in the FTU-R electrical supply (mains) power. The flag shall be set to 0 after
sending the initialization flags reset response.
– The "previous host reinit" (PHRI) flag: This flag shall be set to 1 after a power-up of the FTU-R
triggered by the NT host. The flag shall be set to 0 after sending the initialization flags reset
response.
The value of the initialization flags shall be formatted as one byte [0000 00ba] where "a" is the value of the
PLPR flag and "b" is the value of the PHRI flag.
11.2.2.11 Management counter read commands and responses

The management counter read request command shall be used to retrieve the current value of certain
management counters maintained by the far-end FTU. The management counter read request command is
shown in Table 11-31 and may be initiated by either FTU and is used to request the values of the counters.
The response shall be as shown in Table 11-32. The first byte of the command and response shall be the
assigned value for the management counter read command type, as shown in Table 11-5. The second byte
of the command shall be as shown in Table 11-31. The second and all following bytes of the response shall
be as shown in Table 11-32. The bytes shall be sent using the format described in clause 11.2.2.1.

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