Iax2 "Callno Usage" exhaustion

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Iax2 "Callno Usage" exhaustion

Postby spicchio » Thu Apr 28, 2022 6:22 am

Hi everyone,
this is my version of vicidial

ViciBox Server v.8.1.2
Version: 2.14b0.5
SVN Version: 3121
Asterisk 13.24.1-vici
Multi Server (3 ws, 3 pbx)

There are no additional software on the servers,
answering machine detection is active.
On PBX1 the "Callno Usage" grows abnormally and this causes a problem on outgoing calls
the line falls

These commands that follow on the PBX1 when I do not experience the problem


VICIPBX01:~ # asterisk -rx "iax2 show callnumber usage"
Address Callno Limit
172.16.203.20:4569 12 2048
127.0.0.1:42569 11 2048
172.16.203.21:4569 16 2048

Non-CallToken Validation Callno Limit: 8192
Non-CallToken Validated Callno Used: 0
Total Available Callno: 32718
Regular Callno Available: 16334
Trunk Callno Available: 16384


These are the data when I have the problem

VICIPBX01:~ # asterisk -rx "iax2 show callnumber usage"
Address Callno Usage Callno Limit
172.16.203.20:4569 2002 2048
127.0.0.1:42569 900 2048
172.16.203.21:4569 2100 2048

Non-CallToken Validation Callno Limit: 8192
Non-CallToken Validated Callno Used: 0
Total Available Callno: 32718
Regular Callno Available: 16334
Trunk Callno Available: 16384


I can't understand the cause of this problem can you help me?

Thanks
spicchio
 
Posts: 1
Joined: Thu Dec 16, 2021 11:31 am

Re: Iax2 "Callno Usage" exhaustion

Postby williamconley » Tue May 03, 2022 2:33 pm

I can see you are trying! You did leave off the Build Number, however. Please remember to include that in the future, it can be helpful.

Is your system whitelisted? It's possible you're being attacked with an IAX2 Denial of Service result.

If your agents and carriers are all SIP, you could just close the IAX2 ports on the servers except to each other to resolve that issue temporarily. But whitelisting is still the best bet in the long run.
Vicidial Installation and Repair, plus Hosting and Colocation
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