bill black
2005-Apr-24 13:00 UTC
[Asterisk-Users] T1 E&M wink issues - bad int'l dial-out andoccasional dropped calls
Customer has integrated access arrangement with 16 channels of data/8 for voice that is split via customer cisco equipment. No local dialing, LD and incoming 800 service only via the t1. Qwest provides both the local loop and LD/800 service but it is provided via re-seller PNG. We have verified clock integrity via cisco logs that show no frame slips (cisco uses CO as a reference and we use the cisco as a reference.) No reference to Feature Group A (or D for that matter) is on our paperwork. It is nearly a rural location so I'm guessing we are connected via an End Office but can check this. Bill jltaylor wrote:>What kind of service did you subscribe to (what do they call it on your >bill)? >Retail business trunks? >Feature Group A? >Can you dial "local" numbers or is this all long distance? >Is Qwest the LEC or a long distance provider for this service? >Are you connected to an End Office or a Tandem? > >These all may give me a hit as to what is going on. >James > >-----Original Message----- >From: asterisk-users-bounces@lists.digium.com >[mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of bill black >Sent: Sunday, April 24, 2005 10:45 AM >To: asterisk-users@lists.digium.com >Subject: [Asterisk-Users] T1 E&M wink issues - bad int'l dial-out >andoccasional dropped calls > > >Anyone have any ideas here? > >We are using 8 channels of E&M Wink with a T100P for outgoing LD and >incoming tollfree numbers and are apparently connected to a Nortel >DMS-250 at the CO. We are receiving ANI & DNIS just fine and can >dial-out domestically with DTMF but have two issues that are still >unresolved: > >1) We cannot dial-out internationally with an 011 prefix (or any other >prefix that we can think of). Qwest claims (1) they never get >international calls and (2) domestic calls are routed to their LD >service as 00001NXXNXXXXXX instead of 1NXXNXXXXXX. Is some form of >prefix/suffix needed for DTMF dialing over an E&M wink channel? (e.g. >something like the *ANI*DNIS* for incoming.) 011 clearly doesn't work as >a prefix and Qwest's response has invariably been 'there is something >wrong with your PBX' :( Curiously if we follow an >011+international-number with a * we get a recording that we have not >entered sufficient digits to complete the call whereas without the * we >just get a congestion beep from the far end. > >2) Once or twice a day the customer is getting calls dropped. The log >shows the following: > >Apr 21 13:15:51 VERBOSE[22664]: -- Hungup 'Zap/7-1' >Apr 21 13:15:52 VERBOSE[22664]: -- Starting simple switch on >'Zap/7-1' Apr 21 13:15:53 WARNING[22664]: getdtmf on channel 7: >Operation now in progress >Apr 21 13:15:53 VERBOSE[22664]: -- Hungup 'Zap/7-1' > >It appears that we see the line go back on-hook, hangup but then see it go >off-hook again and treat it as another incoming call that never gets a DTMF >input when in fact the call has just been dropped. We've verified that we >are not sharing interrupts, we are on run level 3 etc. zttest shows (so far) >a minimum of 99.987%. Can anyone think of what might be causing this or >what we could ask Qwest regarding possible diagnostics? > >3) Finally, what level of dropped calls is generally considered acceptable? >Like the dead-pixel issue with LCDs this is pretty subjective but is there >an industry number that is typical? (We are presently at ~1% due to this >issue.) > >Thanks to all for any shared wisdom. Bill > > > > > >_______________________________________________ >Asterisk-Users mailing list >Asterisk-Users@lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users >To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > > > >