Product Description

nanoBTS Product Description Software Specification

5.2 Explicitly Not Supported

• Multi-Slot Circuit Switched Data

• EDGE on 139 series BTS (supported by 165 with SR3 software)

• Half-rate speech codec (HR)

• Advanced Multi-Rate speech codec (AMR) on 139/140 series BTS (supported by

165 with SR3 software)

• IP Security

• IP Version 6

• HTTP server

• VGCS and VBS

• SOLSA

5.3 Standards

The base software support level is 3GPP Release 99 unless otherwise stated.

5.4 Reset Behaviour

5.4.1 Boot

On Power on, the bootstrap code changes the LED to state LED_SELF_TEST (note that

this may actually mean that the LED is turned ‘off’ if the LED is disabled in EEPROM

config – see section 5.8.2.

The bootstrap code performs Power-On-Self-Test (POST) on "cold" boot (if "Disable

POST" flag is cleared in EEPROM). Warm boots do not perform POST.

The POST procedures check

• RAM on all processors

• Code Memory on all processors – checksum verification of code banks

• EEPROM Memory – checksum verification of attribute blocks

5.4.2 Software Code Banks and Software Bank Activation

nanoBTS software is stored in two banks, and the active bank is indicated by a EEPROM

switch. If the active bank POST fails, then the inactive bank will be booted – with an

associated Failure Event Report. If the inactive bank POST also fails, then the LED

indicates LED_SELF_TEST_FAILURE.

nanoTRX software is downloaded to the inactive bank using the software download tool

BtsInstaller (see [INST_300]). Software download proceeds without interrupting the

operation of the BTS. The active bank flag is then altered. The next time the BTS restarts,

the new software will be run.