RBS 2202 is a high quality, high capacity 2G radio base station designed specifically for indoor mounting. Its main usage is in large multicasting systems (networks).
It is available for GSM 900, GSM 1800 and GSM 1900 MHz and can be equipped with 6 TRUs in one cabinet. Two cabinets are ususally used to form a 12 TRU cell.
The RBS 2202 supports the use of battery backup. Batteries are located in a separate battery stand (another same size RBS 2202 cabinet) providing 1 to 8 hours of backup time. Battery backup is only possible when using 230v AC as the power supply voltage.
It is designed for a technical lifetime of 25 years @ 24 hours of operation. The RBS 2202 is always used with external antenna systems (see in the picture) where the feeder cable comes into the top of the cabinet.
The following preventive maintenance conditions must be fulﬁlled to guarantee the availability of the RBS.
Fans: The fans must be inspected (cleaned if necessary) every year. The life time of the fans are estimated to be at least 5 years.
Air ﬁlters: The air ﬁlters must be regularly inspected and cleaned (the interval depends on the environmental conditions at the site).
Synchronization: If a DXU-03 (T1, 1.5Mbit/s, 100ohm) is used, the frequency of the built in crystal oscillator shall be measured and aligned (calibrated) at least every third year.
The cabinet is vandal resistant and unauthorized access is not possible without damaging the unit.
A fully equipped RBS 2202 radio cabinet including base frame and cowl weighs of 226 kg. It stands at a total height of 1900 mm.
In an Ericsson AXE10 the EMG subscriber racks consists mainly of Switch Modules for different types of accesses, both analogue and digital access. These modules are called Line Switch Modules, (LSMs). Equipment for testing the subscriber lines and special equipment such as subs private metering (SPMs) can also be found. Each LSM has an SLCT but above them there is whats called the SULTD which sits on the EM bus for connection to the SLCT. This is what is used by AXE10 personel to test subscriber lines.
The SULTD (pronounced SULT Dee) is also where the HOWL card is located. It used to be that if you leave your phone off hook then soon the howler would be activated and you would hear the howler tone screaming out of the handset. I guess we have all heared it! The HOWL is the card 5th from right in the picture.
The above picture shows rows of Line Switch Modules (LSM's) neatly lined up awaiting their fate. This scene reminds me of what it looked like when we were installing the AXE switches. Sadly, this once busy switch is now being dismantled with its subscribers and their traffic already having been migrated to a Next Generation (Voice over IP) based node. The above AXE10 was a fantastic switch and carried traffic in service for over 20 years without any outages.
BYB501 ROJ 204 08/1 R4C RPG2 Regional Processor.The RPG is a Regional Processor (RP) with a Group Switch (GSS) interface.
It was introduced in BYB501 for applications that require high processing capacity. Almost all applications that previously ran on the Regional Processor device (RPD – Motorola 68020) have been transferred to the RPG, which has at least four times as much processing capacity as the RPD.
The RPG is a single-board processor based on the general-purpose Motorola 68060 running at 50 MHz. On the same board is a communications processor (a Motorola 68360) for handling the switch interface and a 10 Mbit/s Ethernet interface.
Although it may be used for any application that requires high processing power, the RPG will initially be used with the following applications
This is an alarm panel from the 80's and 90's generations of BYB202 AXE10. Easy to interperate with A1 and A2 class for the APZ (processor), APT (switching), POWer and EXTernal alarms.
O1 and O2 are Observation alarm classes.
ATT is for ATTendance activated by command by AXE personnel when on site (site attendance).
The white gas mask shaped things are acually speakers and beep when there is an alarm.
TYN and MAN are the names of the sites this panel serves.
Twenty four years to the day since I have been around AXE10. Here I am standing next to an in service APZ211*11. If I could live my life over I would join Ericsson and become an AXE10 engineer again. Two of my good friends (now passed the great divide) were part of the team that installed and commissioned this site in 1990. They done a fantastic job.
Work around enough AXE's and you will come across one of these units. These are the typical airconditioner units that are used in an exchange room containing an Ericsson AXE10 BYB202. They are made by Weatherite Building Services Ltd who have thier head office in Aldridge near Walsall.
The control panel has controls catogories for the Supply fan, Condenser Fan, Compressor #1, Compressor #2, Cooling and Heating.