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[asterisk-users] Telco MWI with Asterisk 1.6-beta9


 
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jim at duda.tzo.com
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PostPosted: Sun Jun 22, 2008 11:38 am    Post subject: [asterisk-users] Telco MWI with Asterisk 1.6-beta9 Reply with quote

I've been trying to get Telco MWI to work with asterisk 1.6. I'm
currently using the beta9 version. I haven't been able to get this new
feature working on any 1.6 beta release version.

I've turned on the full asterisk debug:

logger.conf:
full => notice,warning,error,debug,verbose

The only MWI related debug information I get is:
Jun 20 16:56:22] DEBUG[1917] chan_zap.c: Maybe some MWI on port 4!

I get these message sporadically, whether or not there is an actually
MWI voice mail message waiting.

My Telco service is Verizon FIOS. I know that MWI is working, because
if I pick up an analog phone set attached to the line, I can hear the
stutter tone.

Can anyone explain what might be going wrong?

My zapata.conf has these relevant entries:

; PSTN connected here
;immediate=no
;busydetect=yes
;busycount=8
;musiconhold=default
mailbox=100
mwimonitor=fsk
mwilevel=512
mwimonitornotify=/usr/local/sbin/zapnotify.sh
faxdetect=incoming
signalling=fxs_ks
context=incoming
channel => 4

For mwimonitor, I've tried different values of "y", "yes", "fsk",
"neon". None of them have any different results.

I've tried lower values for mwilevel too, nothing seems to work.

Is there additional debugging I can turn on in the chan_zap.c source code?

Thanks,

Jim
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kpfleming at digium.com
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PostPosted: Sun Jun 22, 2008 6:51 pm    Post subject: [asterisk-users] Telco MWI with Asterisk 1.6-beta9 Reply with quote

Jim Duda wrote:

Quote:
My Telco service is Verizon FIOS. I know that MWI is working, because
if I pick up an analog phone set attached to the line, I can hear the
stutter tone.

The MWI detection in chan_zap/chan_dahdi is not for stutter tone; it
supports either FSK MWI pulses (slimier to Caller ID, but transmitted
during idle times on the line), or neon-style pulses of AC.

Unless your telco service specifically supports phones that can display
whether you have new messages (and how many), you don't have the right
kind of MWI signaling from the telco. It is doubtful that *any*
residential phone service will work in the way that chan_zap is
expecting; FSK and neon MWI signaling are generated by legacy PBX
systems with analog ports, not telco (CO) switches.

--
Kevin P. Fleming
Director of Software Technologies
Digium, Inc. - "The Genuine Asterisk Experience" (TM)
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jjones at danrj.com
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PostPosted: Mon Jun 23, 2008 9:44 am    Post subject: [asterisk-users] Telco MWI with Asterisk 1.6-beta9 Reply with quote

On Jun 22, 2008, at 6:51 PM, Kevin P. Fleming wrote:

Quote:
Jim Duda wrote:

Quote:
My Telco service is Verizon FIOS. I know that MWI is working,
because
if I pick up an analog phone set attached to the line, I can hear the
stutter tone.

The MWI detection in chan_zap/chan_dahdi is not for stutter tone; it
supports either FSK MWI pulses (slimier to Caller ID, but transmitted
during idle times on the line), or neon-style pulses of AC.

Unless your telco service specifically supports phones that can
display
whether you have new messages (and how many), you don't have the right
kind of MWI signaling from the telco. It is doubtful that *any*
residential phone service will work in the way that chan_zap is
expecting; FSK and neon MWI signaling are generated by legacy PBX
systems with analog ports, not telco (CO) switches.



Actually CLASS MWI, ie FSK, is a standard feature of Telco COs.

It may be used with stutter, they are not exclusive, check with Verizon.

I designed and manufactured these 20 years ago and Kevin is correct
it uses same technology as CallerID known as CLASS. The analog
styles, which I also designed and manufactured, are only found on PBX
systems. There are several flavors that all signal based on some
voltage mechanism.
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jra at baylink.com
Guest





PostPosted: Mon Jun 23, 2008 10:02 am    Post subject: [asterisk-users] Telco MWI with Asterisk 1.6-beta9 Reply with quote

On Mon, Jun 23, 2008 at 09:44:47AM -0500, Jerry Jones wrote:
Quote:
Actually CLASS MWI, ie FSK, is a standard feature of Telco COs.

It may be used with stutter, they are not exclusive, check with Verizon.

I designed and manufactured these 20 years ago and Kevin is correct
it uses same technology as CallerID known as CLASS. The analog
styles, which I also designed and manufactured, are only found on PBX
systems. There are several flavors that all signal based on some
voltage mechanism.

Well, not to pick a nit or anything...

CLASS stands for Custom Local-Area Signalling Services, a name applied
by (I think) Bellcore to a collection of New Added Spiffiness that
started appearing on phones in the early 80s when the switches started
to go digital.

It's used (IME) as an umbrella term to describe a bunch of stuff:

R.E.M's favorite, '*69', is called a CLASS code.
CNID is a CLASS service, as was MWI.
Distinctive ringing is a CLASS service.

These services were define by various publications in Bellcore (now
Telcordia)'s LATA Switching Systems Generic Requirements, FR-64, a spec
document that RBOCs and CLECs bought and used to write RFPs for class-5
switches to switch makers who also bought them and used them to spec
and build said switches.

Last I looked it came in about 18 binders, and cost something like $15k
to buy (er, excuse me: license).

No, no educational discounts, (damnit Smile.

If you're the sort of geek who enjoys this stuff, there's a list here:

http://telecom-info.telcordia.com/site-cgi/ido/index.html

Cheers,
-- jra
--
Jay R. Ashworth Baylink jra at baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com '87 e24
St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274

Those who cast the vote decide nothing.
Those who count the vote decide everything.
-- (Joseph Stalin)
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