We experience exact same thing on DAHDI with Sangoma USB FXO device on short circuited lines. Phantom calls are actually due to a short in the lines that happen occasionally.
-Bruce On Thu, Apr 7, 2011 at 7:16 PM, Warren Selby <wcse...@selbytech.com> wrote: > On Thu, Apr 7, 2011 at 4:53 PM, Brian Henning <bhenn...@pineinst.com>wrote: > >> Hi, >> >> Now and then our SIP phones ring with "asterisk" showing as the caller-ID. >> Upon picking up the receiver, there is about five seconds of silence and >> then the channel is closed (hangup). Can anyone offer some insight? >> Here's >> relevant snippets from my extensions.conf and Master.csv log: >> > > <snip> > > I've seen this on cases where a "phantom" call comes in on a DAHDI channel > - these calls were the results of faulty wiring on the part of the telco. > Check your logs for any errors on your DAHDI channels around the time of the > "ghost" calls. > > It could also be a case of someone calls in and then hangs up before the > call is actually passed to asterisk, and the telco is just slow to hangup > the call. > > >> As an aside, the Set(CALLERID...) bit doesn't work. The idea was to >> prepend >> a 9 so that a SIP user could use the "redial" feature of the phone's call >> log to return a missed call (automatically including the 9 for outside >> line). Unfortunately the 9 does not get prepended. >> > > Your Set() syntax is wrong. Try this: > > > exten => s,n,Set(CALLERID(num)=9${CALLERID(num)}) > > -- > Thanks, > --Warren Selby, dCAP > http://www.selbytech.com > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
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