[asterisk-users] "ring splash"

[Trevor Benson]

Strangely enough I have used this many times with our POTS from AT&T.  We get ring splash, but didnt get a ghost ring into the system, just the valid ring that was redirected to the VoIP lines after forwarding.  Although I think i had the Asterisk-GUI creating the dialplan on these systems, not sure if it changes anything besides the dialplan though that would cause it to seem "normal" during a forward of a POTS line.


--
Trevor Benson
dCAP, LPIC-1, CLA, Network+, MCP, CNA
A1 Networks - Network Engineer
DID (707)703-1041
FAX (707)703-1983






On May 26, 2010, at 9:43 AM, Cary Fitch wrote:

> The ring splash is a long standing feature of call forwarding.
> 
> Of course somewhere in the Asterisk code a change could be made to extend
> the time required to detect a valid ring.
> 
> But, how about just unplugging the pots lines from the PBX with a quick
> restore ability?  Unplug lines at the NID, or open bridging clips or
> whatever applies.
> 
> Cary Fitch
> 
> 
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jeff
> LaCoursiere
> Sent: Wednesday, May 26, 2010 11:36 AM
> To: asterisk-users at lists.digium.com
> Subject: [asterisk-users] "ring splash"
> 
> 
> Something new to me.  Recently installed a 1.4.30 box for a small office 
> with four POTS lines in a hunt (Digium TDM410P).  Had the telco put a 
> "call forward" option on the main line of the hunt.  They dial a feature 
> code from their desk phones (Polycom IP450) that results in forwarding the 
> main number to our VoIP service.  This is all to let them "try out" our 
> dialtone service before porting the number to us and ditching the POTS 
> lines.
> 
> So we perform some test calls and they all go through fine, and everyone 
> is happy, BUT everytime a call comes through it ALSO causes the POTS line 
> to ring, and a "ghost" call rings all the phones in the office (the 
> desired result of an inbound call from POTS).  When they answer it they 
> get fast busy because it isn't actually a real call.
> 
> I spoke to the telco this morning about it and they said "oh yeah - that 
> is a "ring splash" that lets the customer know that a call was forwarded". 
> They said this was a feature of their DMS-100, it has worked that way for 
> twenty years, and they can't turn it off.
> 
> So to the question - can the TDM410P somehow tell the difference between a 
> "ring splash" and an actual inbound call?  I think in the meantime I will 
> send inbound POTS calls to an auto attendant that will eventually hang up, 
> but would love a more elegant solution ;)
> 
> Cheers,
> 
> j
> 
> -- 
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