[Asterisk-Users] Echo in asterisk phones.

[albyfromg]

Hi all.
We have just setup and asterisk with a 4 line zaptel board with Cisco
7960 and BudgeTone-100 IP phones. All works fine except for this
nagging echo. Whenever I talk, I hear my voice echo back.. This only
happens whenever I talk on an actual phone call. Whenever I talk to
another extension, no problems. I would appreciate any help. I have
searched the google lists and have not found any relevant info.
Thanks.