Tag Archives: 9600

Avaya phone vulnerability

Z6 Mag posted an article describing a pretty old vulnerability in the code of Avaya’s H323 phones. The issue allows a remote code execution, that can be used by a hacker to extract the audio from the speakerphone.

Avaya has been aware of that issue for a while and offers a new software for the phone: https://downloads.avaya.com/css/P8/documents/101059945

If you need help to update your phones you can contact me.

Another article posted on Bleeping Computer describing the same issue: https://www.bleepingcomputer.com/news/security/avaya-voip-phones-harbored-10-year-old-vulnerability/

2 seconds silence with IP Office and 9608G

Recently after upgrading IP Office to release 10.1 we got calls from different customers who told us that they have about two seconds of silence at the beginning of a call. After researching with one of our customers we figured out that only 9608G phones are affected while other models (9611G, 9641GS) has no problems. In our tests showed that only outbound calls are affected and only calls with direct media (no VCM calls and no RTP relay calls) are affected.

The phone were running different firmware versions and we did an upgrade to 6.6401 as it is the latest firmware that ships with IP Office 10.1. But that didn’t help. Due to the fact that 9611 phones that run the same firmware have no issues we thought of a bad series of hardware. Continue reading