DSP voice buffersize negotiation between DSPs for voice packet end devices

• US 6,778,545 B1
• Filed: 09/24/1998
• Issued: 08/17/2004
• Est. Priority Date: 09/24/1998
• Status: Expired due to Fees

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Moataghed, Keyvan
• Primary Examiner(s): Hsu, Alpus H.
• Assistant Examiner(s): Nguyen, Toan D.
• Application Number:
  US09/160,470
• Time in Patent Office: 2,154 Days
• Field of Search: 370/413, 370/447, 370/461, 370/468, 370/477, 370/493
• US Class Current: 370/413
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/30 in combination with information about buffer occupancy at either end or at transit nodes

Abstract

A packet switching network system for use in transferring information that is in the form of packets and including an originating device and a destination device for communicating therebetween through a packet switching network, the originating device including a sending device having a first buffer with a predetermined first buffer size, the first buffer being used to store information that is to be sent to the destination unit, the sending device for sending a request packet including the first buffer size, through the packet switching network, to the destination device, the destination device including a receiving device having a second buffer with a predetermined second buffer size, the second buffer being used for storing information that is received from the originating device, the receiving device for receiving a request packet including the first buffer size from the originating device, determining whether or not the received first buffer size is supported by the destination device, and accordingly sending back a response, through the packet switching network, to the originating device, wherein, during initialization, the originating device and the destination device enter into negotiations as to a mutually-acceptable buffer size that is to be used for information transfer by the packet switching network system.

Claims

1. A packet switching network system for use in transferring information that is in the form of packets including an originating device and a destination device for communicating therebetween through a packet switching network comprising:

a sending device, included within the originating device, having a first buffer with a predetermined first buffer size, the first buffer for use in storing information that is to be sent, through the packet switching network, to the destination device, the sending device for sending a request packet including the first buffer size, through the packet switching network, to the destination device, said sending device including an originating telecommunications device responsive to information provided by a user and operative to develop originating analog signals; and

a receiving device included within the destination device, having a second buffer with a predetermined second buffer size, the second buffer for use in storing information that is received from the originating device, the receiving device for receiving a request packet including the first buffer size from the originating device, determining whether or not the received first buffer size is supported by the destination device, and accordingly sending back a response to the originating device through the packet switching network as to whether or not the received first buffer size is supported by the destination device,

wherein the originating device and the destination device enter into negotiations as to a mutually-acceptable buffer size that is to be used for information transfer by the packet switching network system.

2. A packet switching network system as recited in claim 1 wherein the sending device further includes an originating digital signal processing (DSP) device responsive to said originating analog signals for converting the latter from analog format to digital format, said originating DSP device operative to develop originating digital interface signals.

3. A packet switching network system as recited in claim 2 wherein the sending device further includes an originating interface device responsive to said originating digital interface signals and operative to develop network signals for transfer thereof, through the packet switching network, to the destination device.

4. A packet switching network system as recited in claim 3 wherein the destination device further includes an destination interface device responsive to said network signals and operative to develop destination DSP signals.

5. A packet switching network system as recited in claim 4 wherein the destination device further includes a destination DSP device responsive to said destination DSP signals for converting the latter from analog format to digital format, said destination DSP device operative to develop destination telecommunications signals.

6. A packet switching network system as recited in claim 5 wherein the destination device further includes a destination telecommunications device responsive to said destination telecommunications signals for use by a destination.