| 摘要 |
In a telecommunications system, an input flow (10) of speech packets arrives. In addition, an input flow (20) of high priority packets (e.g. signalling packets) arrives intermittently. The high priority packets are to be inserted into the flow of speech packets to produce an output flow (18), in which the high priority packets are inserted into time slots previously occupied by speech packets. A "leaky bucket" algorithm (30,32) is used to control the insertion of the high priority packets into the output flow so that a burst of the high priority packets, up to a predetermined maximum size, can be inserted. In addition, it is ensured that at least N speech packets remain in the output flow between two consecutive higher priority packets therein. Insertion of a high priority packet can cause a speech packet to be discarded (deleted) or, instead, can simply delay all the speech packets by one time slot. |
