{HEAD ~ The voice gateway} 232 may optionally include host processors, LAN/WAN ports, {TAIL ~ Ethernet ports}, T1 or E1 telephony interface cards, Voice Feature Cards with DSP Modules providing voice compression transcoding , carrier quality echo cancellation with 8 ms 32 ms tail length, a de jitter buffer which adapts to delay variations in the network in order to minimize the delay, packet loss concealment that generates concealment frames for lost packets using information from previously received data, and tone detection and generation 
include
{ HEAD ~ The voice gateway } 232 may optionally include host processors , LAN / WAN ports , { TAIL ~ Ethernet ports } , T1 or E1 telephony interface cards , Voice Feature Cards with DSP Modules providing voice compression transcoding , carrier quality echo cancellation with 8 ms 32 ms tail length , a de jitter buffer which adapts to delay variations in the network in order to minimize the delay , packet loss concealment that generates concealment frames for lost packets using information from previously received data , and tone detection and generation
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