Product Description

nanoBTS Product Description Software Specification

5.8 System Monitoring

The BTS monitors the Radio Synthesiser OPLL to ensure that it is transmitting on

frequency. This will be done once per GSM frame. If an error is detected then the BTS will

autonomously attempt to relock the OPLL. If the synthesiser does re-lock then a warning

level FER shall be sent and immediately ceased. If the synthesiser fails to lock then a

critical level FER on the radio carrier object is sent.

The BTS monitors the transmitter Power Amplifier OOL signal once per GSM Frame. If the

BTS detects that the PA OOL signal is in error then the BTS shall send a major failure FER

for the radio carrier object (the BTS does not reboot).

The BTS monitors its internal temperature. This is represented as a percentage of the

nominal operating range. If the reading exceeds the "Temperature Alarm Thresholds" that

are set in EEPROM then a FER shall be sent. It shall also send an SNMP trap. The

default alarm thresholds are 0% and 100%. The percentages can go below 0% and are

indicated as a signed number between –128% and +127%.

The BTS monitors its Input Voltage. If the result exceeds the "Voltage Alarm thresholds"

then the BTS shall send an FER. It shall also send an SNMP trap. The default alarm

thresholds are 0% and 100%.

5.8.1 SNMP Specific Features

The BTS supports SNMP v2C (Community-based) only.

The BTS supports the

• SMIv2 "Interfaces" MIB (see SMIv2 - Interfaces MIB - RFC 2233)

• SMIv2 "IP" MIB (see SMIv2 - IP MIB (IPv4) - RFC 2011)

• SMIv2 "TCP" MIB (see SMIv2 - TCP MIB - RFC 2012)

• SMIv2 "UDP" MIB (see SMIv2 - UDP MIB - RFC 2013)

• "Ethernet Interface MIB" – iso88023-csmacd group (see SNMP Ethernet Interface

(EtherLike) MIB – RFC 1643)

• SNMPv2 MIB. (see SMIv2 – SNMPv2 MIB – RFC 1907) with System group, SNMP

group and MIB Objects group.

The BTS does not support SNMP "Sets". These shall be responded with the appropriate

"SetResponse".

The BTS supports SNMP "Get", Get Next and "Get Bulk" on the supported MIBS

The BTS supports SNMP "Traps" on the supported MIBS.

The BTS supports SNMP enterprise "Traps" on all 12.21 failure event reports (except

"Warning" or "Logged Warning" level failures) as the "last reported error" in the

ip.access.v1 MIB. If the trap address is not NULL then a trap should be sent to the SNMP

management agent.

The BTS supports setting of the SNMP "Community string" EEPROM parameter via 12.21

extensions only.

The BTS supports setting of the SNMP "Community string IP address" (that shall be used

to limit SNMP gets by IP address) EEPROM parameter via 12.21 extensions only.