2821 router with T1 PRI to PSTN. Had several echo issues due to DSPWARE but now all is fine except for the first few seconds of the call. I know that before the extended echo canceler you could use echo-cancel suppressor to take care of echo before the canceler converged. Suppossedly you do not need the suppressor with the extended echo canceler. However, I am still getting echo for the first few seconds of calls. Any ideas?