IP users and echo on APA cards

[Batab]

Hi! (Sorry I put first this topic on Networking).

I have a system with OXO Rls 8.2 and 90 IP extensión. The entire system uses analog lines with APA cards. When users make a calls from IP phones echo is herad for 30 or 40 seconds and decreases until is almost out. If a user makes a call from an analog phone no problem.

Someone faced a similar problem?

All user , on details have activated echo cancellation.


Any sugestions? Thanks in advance.

[tot3nkopf]

Please do not double post!

[oxeman4400]

connect Earth to your system other wise change in your trunk category to short or long line ,maybe fix it.

[Batab]

When I change parameters on trunk category (short line; normative) no more echo. There is a 2 ports on Gateway VoIP Quintum, then the Quintum team work with delays and timers and no more echo too. Thank you!