Advantech Wireless – your partner for IP trunking over Satellite

The Advantech AMT75 High Speed DVB-S/S2 modem is ideally suited for providing advanced high speed Ethernet and IP trunking to carriers and service providers. Essential to supporting this capability is Advantech’s new IPE-422 interface card which, in addition to providing rich Ethernet and IP feature and MPEG encapsulation capability, also supports a special Mode Adaptation mode which is used to support Adaptive Coding and Modulation (ACM). ACM is an important evolution in DVB-S2 intended to provide high link assurance and optimization. As the name implies, the coding and modulation of the DVB-S2 system will adaptively and errorlessly adjust to changing environmental conditions. This means that instead of risk losing the connection due to heavy fading, ACM will adjust the modem performance to maintain the connection and increase the total up-time and availability.

In support of point-to-point Ethernet/IP trunking solutions, ACM monitors, in real time, the performance of the link and, the system automatically adjust the coding and modulation in order to maximize the capacity-availability ratio at any given time. Additionally, the ACM benefit can be used in conjunction or independently of an Automatic Uplink Power Control (AUPC) policy to dynamically adjust the link coding and modulation to provide best BER results and highest possible link availability. This is especially valuable for IP links since high BER is essential to reduced re-transmission attempts and optimal link utilization.