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Multiple DSP channels are busy out for single call

Multiple DSP channels are busy out for single call, when inbound call to voice gateway from PBX comes to IP-phones ,, too many voice channesl are being used, during this time no ip phones can take access to trunk to call to PSTN,,,iam using cisco 2821, ios 12.4(9)T.

here is the short output from sh voice call status.

x819 1481 0x47B5C8B0 0/3/0:15.21 0/1:2 18884 g711ulaw 9/9

0x81A 1481 0x47B5C8B0 0/3/0:15.19 0/1:3 *18884 g711ulaw 9/9

0x81B 1482 0x47B5C8B0 0/3/0:15.18 0/1:6 18884 g711ulaw 9/9

0x81C 1482 0x47B5C8B0 0/3/0:15.17 0/2:2 *18884 g711ulaw 9/9

0x81D 1483 0x47B5C8B0 0/3/0:15.1 0/2:3 18884 g711ulaw 9/9

0x81E 1483 0x47B5C8B0 0/3/0:15.15 0/2:4 *18884 g711ulaw 9/9

0x81F 1484 0x47B5C8B0 0/3/0:15.2 0/2:5 18884 g711ulaw 9/9

0x820 1484 0x47B5C8B0 0/3/0:15.14 0/2:6 *18884 g711ulaw 9/9

0x821 1485 0x47B5C8B0 0/3/0:15.3 0/1:7 18884 g711ulaw 9/9

0x822 1485 0x47B5C8B0 0/3/0:15.13 0/1:8 *18884 g711ulaw 9/9

0x823 1486 0x47B5C8B0 0/3/0:15.4 0/1:9 18884 None 9/200

0x825 1487 0x47B5C8B0 0/3/0:15.5 0/1:10 18444 g711ulaw 9/200

1 ACCEPTED SOLUTION

Accepted Solutions
Silver

Re: Multiple DSP channels are busy out for single call

DSP can support multiple calls, up to 16 if the DSP is a C5510, depending upon codec complexity.

Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation

http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800b6710.shtml

1 REPLY
Silver

Re: Multiple DSP channels are busy out for single call

DSP can support multiple calls, up to 16 if the DSP is a C5510, depending upon codec complexity.

Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation

http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800b6710.shtml

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