[Asterisk-Users] T1 E&M wink issues - bad int'l dial-out andoccasional dropped calls

[bill black]

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 at lists.digium.com
>[mailto:asterisk-users-bounces at lists.digium.com]On Behalf Of bill black
>Sent: Sunday, April 24, 2005 10:45 AM
>To: asterisk-users at 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
>
>
>
>
>
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