[asterisk-users] Echo in the outside call (E1)

I have a little problem with mi outside calls. I Have Echo. It`s randomly. I install codec G729 and I have Grandstream GXP2020. Asterisk 1.4.9,Unicall 0.0.5pre1,Zaptel 1.4.5 I have a E1 and 30 channel. Can you give a tip, where can I check If I miss something.

Re: [asterisk-users] Echo in the outside call (E1)

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Ruben Zamora wrote: I have a little problem with mi outside calls. I Have Echo. It`s randomly. I install codec G729 and I have Grandstream GXP2020. Asterisk 1.4.9,Unicall 0.0.5pre1,Zaptel 1.4.5 I have a E1 and 30