IP V6 implementation.
Hot standby server for high availability.
BHCA/BHCC calculations & assessment of hardware requirement based on these calculations.
Call Admission Control-implementation.
QOS,Jitter packet, loss & bandwidth choking parameters to be factored.
Path replacement while call is in progress in case of deterioration.
Q-sig implementation. Understanding Q-sig which is an ISDN protocol and integrate it with Freeswitch.
Video Conferencing is to be implemented on sip as well as H323 video phones.
Understanding each RFC.
Understanding resources for DTMF dialler & receiver/RBT, engage tone, Dial Tone that are system generated. Resource for codec allocation.Implement available codecs like 729/723 & any proprietary codec.
Key telephone with special features/use of extended SIP protocol and its implementation on Freeswitch.
Select SIP client from open source and implantation of various features on the same including making it work like an operator console with DSS / BLF / AB / AT / AS / docket less booking.