[Asterisk-Users] Echo's and dropped calls

[Justin Carlson]

Hi all,

	I have a problem with echo and silence in the middle of calls.  the echo
problem is that in the first 5 to 10 seconds of a call there is echo on the
sip side but not on the PSTN side, also the echo will randomly come back in
the call sometimes, I'd say 3 out of 10 calls.  the other problem I have is
that sometimes ( like maybe 4 times a day ) we will be talking to PSTN calls
and one side of the call will go silent and then 5 to 10 seconds later come
back.  we have this setup.

  PSTN <--> Asterisk /w T100p <-IAX2-> Asterisk2 /w zapdummy <-sip> snom
200's, and locally in our office it looks like this
  PSTN <-T100p-> Asterisk <-sip-> snom 200's (the echo is on this setup as
well)

any help would be appreciated.