AXE telephone exchange

AXE Telephone Exchange

AXE telephone exchange

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The AXE telephone exchange is a product line of circuit switched digital telephone exchanges manufactured by Ericsson, a Swedish telecom company. It was developed in 1974 by Ellemtel, a research and development subsidiary of Ericsson and Televerket.. The first system was deployed in 1976. AXE is an acronym for Automatic Cross-Connection Equipment.

The AXE is the digital successor to the AKE analogue telephone exchange and ARF/ARM family of crossbar switches. The design is modular with an APZ dual processor running in sync mode, an APT switching part and an APG I/O part. It is used for connecting local landlines, operate mobile networks (TDMA, GSM, CDMA, W-CDMA, PDC), international telephony traffic and signaling.

AXE based equipment are being used as MSC, HLR, SCP, FNR, TSC and wireline nodes.

The brain of the AXE system is a dual processor system called APZ. It runs in parallel sync mode making it fault redundant. The family of APZs started with APZ 210 03 in 1976; the latest one is APZ 212 60. The parallel sync mode was partly abandoned in the APZ 212 40 and subsequent models and has been replaced with a warm standby scheme.

The latest APZ type is 214 01 which is use as MSC and TSC Blade in AXE. The latest implementation of AXE is on a blade cluster system capable of handling up to 8 million subscribers.

The core of the switching...
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