Efficient AAL5-based mechanism for handling voice ATM cells...

Details Efficient AAL5-based mechanism for handling voice ATM cells... Efficient AAL5-based mechanism for handling voice ATM cells...

2003-04-07

2009-06-09

Kizou, Hassan (Department: 2419)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S419000, C370S538000, C370S545000

Reexamination Certificate

active

07545828

ABSTRACT:
A mechanism for implementing a single-interrupt-based voice playout buffer transfer operation. The contents of each respective channel of a multi-channel voice playout buffer are encapsulated so as to prepend a four byte ATM header, a HEC byte, and a four byte AAL2 header to a forty-four byte voice channel field to realize a standard fifty-three byte ATM cell. Within the AAL2 header, a channel identification byte (CID) provides selective mapping to timeslots of a TDM frame, to accommodate variations among different vendor equipments. The next to last bit of the last byte of the ATM header is used as an interrupt to the network processor. Only the highest voice channel asserts this next to last bit as an interrupt bit.

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