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Community Member

Poor Voice Quality

I'm experiencing poor voice quality between my home office and a remote. The offices are connected via a dedicated T-1. The home office is using a 3745 and the remote is running a 3725. QOS is setup as follows:

class-map match-all termserv

match access-group 103

class-map match-all video

match access-group 112

class-map match-all voice

match ip precedence 5

!

policy-map wan-outbound

class voice

priority 350

class termserv

bandwidth 375

class video

bandwidth 256

This map is applied to the serial interfaces on the routers.

Output of show policy-map:

Policy Map wan-outbound

Class voice

Strict Priority

Bandwidth 350 (kbps) Burst 8750 (Bytes)

Class termserv

Bandwidth 375 (kbps) Max Threshold 64 (packets)

Class video

Bandwidth 256 (kbps) Max Threshold 64 (packets)

AutoQos is enabled on the 3550 switches on both ends. Not sure where to start.

4 REPLIES
Community Member

Re: Poor Voice Quality

You're almost there. Try "show policy-map interface"

Community Member

Re: Poor Voice Quality

Here is interface output.

Service-policy output: wan-outbound

Class-map: voice (match-all)

30365502 packets, 1979524828 bytes

30 second offered rate 110000 bps, drop rate 0 bps

Match: ip precedence 5

Queueing

Strict Priority

Output Queue: Conversation 264

Bandwidth 350 (kbps) Burst 8750 (Bytes)

(pkts matched/bytes matched) 6539578/435104296

(total drops/bytes drops) 0/0

Class-map: termserv (match-all)

66417646 packets, 20265473980 bytes

30 second offered rate 254000 bps, drop rate 0 bps

Match: access-group 103

Queueing

Output Queue: Conversation 265

Bandwidth 375 (kbps) Max Threshold 64 (packets)

(pkts matched/bytes matched) 24700539/15267830729

--More-- (depth/total drops/no-buffer drops) 2/1225/0

Class-map: video (match-all)

3043410 packets, 2624179575 bytes

30 second offered rate 0 bps, drop rate 0 bps

Match: access-group 112

Queueing

Output Queue: Conversation 266

Bandwidth 256 (kbps) Max Threshold 64 (packets)

(pkts matched/bytes matched) 1673799/1383582275

(depth/total drops/no-buffer drops) 0/918/0

Class-map: class-default (match-any)

71950643 packets, 94351715773 bytes

30 second offered rate 768000 bps, drop rate 0 bps

Match: any

Community Member

Re: Poor Voice Quality

Well, the problem is not with your Priority Queue bandwidth configuration. You have no drops in that queue.

Can you set up a call that has poor quality. Then on both ends paste output for "sh call active voice brief"-->just pull out the info for the call in question. There should be two legs associated with the call.

Community Member

Re: Poor Voice Quality

Also, we'll need the "show policy-map int" from the other side as well...

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