Processing Mode 4 - Eth(Nts2Bbf)<->Air(S2Bbf) - Newtec EL170 User Manual

Technology
The characteristics of this processing mode are:
• Only supported with DVB-S2 modulation;
• Possible multi-stream operation (up to 32 streams, each tagged with a separate
ISI);
• All routing schemes are supported: L2 Ethernet bridge, L3 IP bridge and IP
routing;
• Full support of VCM and FlexACM.
8.4.4 Processing Mode 4 – Eth(ntS2BBF)<->Air(S2BBF)
The processing mode "Eth(ntS2BBF))<->Air(S2BBF)" is available on a modulator
and is only used when the encapsulation/encapsulation must be performed
externally to the modulator in DVB-S2 mode. This is the case in the hub of
FlexACM or VCM Point-to-Multipoint IP trunking systems, where the encapsulation
is performed in an external EL860 shaping, encapsulator and ACM controller
device. The BBF interface is the interface between the EL860 and the modulator.
The content of the Base Band Frame is fully determined by the external
encapsulator, while the modulator only adds the FEC and performs the modulation
function.
The characteristics of this processing mode are:
• Only supported with DVB-S2 modulation;
• The modulator is fully transparent to the content;
• Functions such as IP routing, encapsulation, QoS or traffic shaping must be
performed by external devices;
• The BBF input cannot be mixed with other IP inputs;
• Readily compatible with the output of the EL860.
version 4.2
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User Manual for EL170/970/470 IP Satellite Modulator/
SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS
Demodulator/Modem