start jb at one frame since it now has better adaptation

src/mod/endpoints/mod_verto/mod_verto.c

@@ -2189,7 +2189,7 @@ static void verto_set_media_options(verto_pvt_t *tech_pvt, verto_profile_t *prof
 	tech_pvt->mparams->inbound_codec_string = switch_core_session_strdup(tech_pvt->session, profile->inbound_codec_string);
 	tech_pvt->mparams->outbound_codec_string = switch_core_session_strdup(tech_pvt->session, profile->outbound_codec_string);
 	
-	tech_pvt->mparams->jb_msec = "-3";
+	tech_pvt->mparams->jb_msec = "-1";
 	switch_media_handle_set_media_flag(tech_pvt->smh, SCMF_SUPPRESS_CNG);
 
 	switch_media_handle_set_media_flag(tech_pvt->smh, SCMF_RENEG_ON_REINVITE);