Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

[1751 high complexity codec support]

hello, everyone:

i found this link:

http://www.cisco.com/en/US/products/hw/routers/ps221/prod_configuration_guide09186a0080106d1c.html

this link states that i can change the codec complexity on a vic for a 1751 and 1760. now i already tried all sorts of upgrades on my 1751s to try and move these things to a high complexity codec (medium complexity is default). none of the ios versions i tried comes with the 'voice-card' command.

on cisco doc cd i found that this command is supported on 2600 and 3600 platforms only (looks like).

my question is: is this codec complexity change even supported in small platforms?

regards,

c.

1 ACCEPTED SOLUTION

Accepted Solutions
Community Member

Re: [1751 high complexity codec support]

By default the router will generate calls with high complexity. The change of complexity is allowed only on VIC cards with certainm IOSes.

5 REPLIES
Community Member

Re: [1751 high complexity codec support]

Here is an output from my lab router with a VIC-2FXO in it. I am using the 12.2.11YV image and I am able to change the complexity.

1751-1 uptime is 3 minutes

System returned to ROM by power-on

System image file is "flash:c1700-sv3y-mz.122-11.YV"

voice-card 1

!

voice-card 2

!

1751-1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

1751-1(config)#voice-card 1

1751-1(config-voicecard)#codec complexity medium

1751-1(config-voicecard)#end

sh run

voice-card 1

codec complexity medium

!

voice-card 2

!

I hope that helps.

Community Member

Re: [1751 high complexity codec support]

i changed the ios version and configured the codec complexity. even though router takes the commands, the codec setting do not change:

DrArroyo#sh voic

*Mar 1 00:12:59.959: %SYS-5-CONFIG_I: Configured from console by consolee dsp

DSP DSP DSPWARE CURR BOOT PAK TX/RX

TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK COUNT==== === == ======== ======= ===== ======= === == ========= == ===== ===========C549 000 00 g711ulaw 4.1 Idle Idle 0 0 2/0 NA 0 29/

C549 000 01 g711ulaw 4.1 Idle Idle 0 0 2/1 NA 0 29/

Active Voice Call details

Current total analog signalling channels: 2

Current max allowed digital timeslot for voice: 6

Current number of DSP group: 1

Group 0:

Current allocated analog signalling channels: 2

Current free analog signalling channels: 0

Current allocated digital signalling channels: 0

Current free digital signalling channels: 6

Port(s) served: 2/0 2/1

Current Available MIPS: 200

SPMM DSPRM State Image D-sig D-sig A-sig A-sig Mips Voice/Xcode

Dsp Dsp allocate free allocate free Free Chan

0/0 0 UP FIXHC 0 0 2 0 100 0

1/0 1 UP FLEX6 0 6 0 0 100 0

DrArroyo#

Community Member

Re: [1751 high complexity codec support]

does this line mean that the router will attempt to generate calls with a high complexity codec?

0/0 0 UP FIXHC 0 0 2 0 100 0

regards,

c.

Community Member

Re: [1751 high complexity codec support]

By default the router will generate calls with high complexity. The change of complexity is allowed only on VIC cards with certainm IOSes.

Community Member

Re: [1751 high complexity codec support]

we just figured out that even though the 'show voice dsp' command shows a MC codec once the call is established the same command shows a HC codec.

this works differently than a 2600 where the same command is set to HC from the start once you configure the 'codec complexity high' command.

sorry for the inconvenience and thanks,

c.

221
Views
0
Helpful
5
Replies
CreatePlease to create content