I've replaced 2XTE110 with an A102 with echo cancellation specifically to deal with echo problems. However, user feedback has indicated to me that on some calls (not a lot, but some) the call is unusable, with audio artifiacts, described by one user, as: "very bad phasing reverb & feedback (from my rock & roll days)". This is quite intermittent, as in most cases, the user says, it's a one-time thing, they hang up, the problem caller calls back, everythings good. It's as if the Sangoma is trying too hard? I personally have not heard this, but I have to trust what the users say.
Some ideas I'd like to bounce: 1. tx and rxgains - this card is plugged into an Atlas 550 which seems to run a little hot on the gains. 2. Timing - the card takes it's sync from the Atlas, which in turn syncs from the PRI. Maybe have one port on the card take it's timing from the other port? Don't see how it would be relevant, but hey, that's all I've got. 3. Taps? Does an A102 even care about taps or just echocancel=yes? Running * 1.0.9, Zaptel 1.0.9, FC2 yum-updated to current, quad Xeon. Production box, handles 2-6 thousand calls a day, snom 360 handsets w/ latest firmware, load average never goes over 2.0 My conf files: wanpipe1.conf: [devices] wanpipe1 = WAN_AFT_TE1, Comment [interfaces] w1g1 = wanpipe1, , TDM_VOICE, Comment [wanpipe1] CARD_TYPE = AFT S514CPU = A CommPort = PRI AUTO_PCISLOT = NO PCISLOT = 4 PCIBUS = 1 FE_MEDIA = T1 FE_LCODE = B8ZS FE_FRAME = ESF FE_LINE = 1 TE_CLOCK = NORMAL TE_REF_CLOCK = 0 TE_HIGHIMPEDANCE = NO LBO = 0DB FE_TXTRISTATE = NO MTU = 1500 UDPPORT = 9000 TTL = 255 IGNORE_FRONT_END = NO TDMV_SPAN = 1 TDMV_DCHAN = 0 [w1g1] ACTIVE_CH = ALL TDMV_ECHO_OFF = NO TDMV_HWEC = YES wanpipe2.conf: [devices] wanpipe2 = WAN_AFT_TE1, Comment [interfaces] w2g1 = wanpipe2, , TDM_VOICE, Comment [wanpipe2] CARD_TYPE = AFT S514CPU = A CommPort = PRI AUTO_PCISLOT = NO PCISLOT = 4 PCIBUS = 1 FE_MEDIA = T1 FE_LCODE = B8ZS FE_FRAME = ESF FE_LINE = 2 TE_CLOCK = NORMAL TE_REF_CLOCK = 0 TE_HIGHIMPEDANCE = NO LBO = 0DB FE_TXTRISTATE = NO MTU = 1500 UDPPORT = 9000 TTL = 255 IGNORE_FRONT_END = NO TDMV_SPAN = 2 TDMV_DCHAN = 0 [w2g1] ACTIVE_CH = ALL TDMV_ECHO_OFF = NO TDMV_HWEC = YES Zaptel.conf: loadzone = us span=1,1,0,esf,b8zs span=2,1,0,esf,b8zs bchan=1-23 dchan=24 bchan=25-47 dchan=48 Zapata.conf: [channels] language=en context=from-pstn switchtype=national pridialplan=unknown signalling=pri_cpe faxdetect=incoming usecallerid=yes echocancel=yes echocancelwhenbridged=yes txgain=-2.0 rxgain=-2.0 group=0 channel => 1-23 channel => 25-47 _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users