1. koszegi62,262
2. xuserx2...55,732
3. feptias53,125
4. ajkhalifa50,312
5. uetian170749,920
6. kenboonejr45,500
7. grblades44,231
8. lrmoore44,118
9. hus198439,086
10. ikalmar36,447
11. ged12532,650
12. harbor23529,700
13. ehatchell27,018
14. decoleur26,800
15. kode9922,900
16. voipman22,450
17. michofreiha20,800
18. rpalmeira2217,346
19. cordeos15,575
20. API_NOC13,900
21. samdart13,600
22. bkepford13,500
23. table911,950
24. wtalleyee11,500
25. denisdsr2010,964

1. grblades722,653
2. rpalmeira22243,223
3. Joel_Sisko208,919
4. lrmoore148,896
5. feptias142,782
6. kode99110,007
7. xuserx2...71,182
8. harbor23569,678
9. bfason69,575
10. uetian170767,650
11. koszegi62,262
12. decoleur53,700
13. ajkhalifa50,312
14. michofreiha48,298
15. benhanson47,678
16. kenboonejr45,500
17. KerryG40,690
18. scampgb40,637
19. jfrady39,354
20. hus198439,086
21. ehatchell38,457
22. ikalmar36,447
23. greekstones33,417
24. ged12532,650
25. cstosgale32,355

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09/27/2006 at 07:10AM PDT, ID: 22004576

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4.0

Severe Static Problems

Asked by ctrost in Voice Over IP

Tags: cpu, cisco, high

We are at the end of the road here and I'm using this site as a last resort. We had a site complaining that they would receive static on the line when making calls external to the network. They also mentioned this happened randomly but when it does happen, you can only hear maybe every 3rd word and the call is rendered useless. Berbee confirmed that it wasn't a configuration or a hardware issue. We are using a Cisco 1760 Router with a combination of Cisco 7910 and 7912 phones at this site.

I built an exact replica of the router (hardware wise) but upgraded the IOS to a crypto image of 12.4. The old router was on a basic IP voice image of 12.2. We went out this morning to do extensive testing. I had 2 guys making calls while I was monitoring the router. As we made calls, Serial1/0:23 came up first, then progressively the interfaces came up counting down from :23 down to about :13 or :12. After that, the calls became static'd and impossible. In the meanwhile, users were taking calls and making calls internally to the network and those calls (1 or 2 calls) appeared to bring up Serial1/0:0 and :1. After that, calls would no longer work.

I checked the router and I was getting this message:

14:04:43: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (96/100).
Call (callID=267) is rejected.

14:04:45: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (96/100).
Call (callID=268) is rejected.

14:05:08: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (96/100).
Call (callID=269) is rejected.

If you're like me, you'd jump quickly to say ok well, the 1760 just can't handle this many PRIs. However, we have a 1760 at another site with the same amount of PVDM cards (2) and the same amount of DSP resources. This other site has maxxed out their PRIs on several occasions and they have never experienced static. I cannot find any major configuration differences between the other site and this one.

Any ideas? Anything I can check? I can access the working site and the static'd site both remotely so please let me know if you have any ideas.

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20090824-EE-VQP-74

Severe Static Problems

Asked by ctrost in Voice Over IP

Tags: cpu, cisco, high

About this solution