[App_rpt] Remote Base

Mon Mar 12 15:52:58 UTC 2007

IAX2 already has radio support built-in with KEY and UNKEY messages in
the control frames. This is how we link to other systems in app_rpt. IAX
ATA's would have to be modified handle these control frames with a
special configuration setting. For receive, the ATA would have to send a
KEY message every time the loop is closed, and an UNKEY message every
time the loop is opened. For transmit, the ATA would have to apply
battery when the KEY message is received, and remove battery when the
UNKEY message is received. Also for transmit, there needs to be a
watchdog function to kill the TX if the connection is lost or degraded.

Steve.

> In my looking at this issue I noted that iax2 is headed for ietf
> standardization and is currently in draft.  me thinks that a few choice
> commands placed in the iax2 protocol to do this in call signalling would be
> quite nice.  (I may ask a friend of mine who works at digium about
> that)  If
> IAX2 had the commands to do polarity reversal in call what would it take to
> have app_rpt control it?
> 
> Eric
> 
> On 3/11/07, Jim Duuuude <telesistant at hotmail.com> wrote:
>>
>> No SIP ATA's even come CLOSE to supporting what we need.
>>
>> What they call battery reversal is an indication that the call has
>> answered
>> on the far end
>> which may happen ONLY once per call (if it un-answers on the far end it
>> terminates the
>> call).
>>
>> Our needs are to have a SIP call initiated and for it to say up (rather
>> permanently or so)
>> and to have the ability to send on-hook/off-hook states many times as
>> needed. No
>> one does this or even has a concept of this.
>>
>>
>> >From: Stephen Rodgers <hwstar at rodgers.sdcoxmail.com>
>> >Reply-To: Asterisk Repeater Controler <app_rpt at lists.illiana.net>
>> >To: Asterisk Repeater Controler <app_rpt at lists.illiana.net>
>> >Subject: Re: [App_rpt] Remote Base
>> >Date: Sun, 11 Mar 2007 13:58:52 -0700
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>> >
>> >
>> >Eric,
>> >
>> >You can research this further, but I'm not convinced SIP ATA's give a
>> >fine enough level of control for polarity reversal, or battery
>> >interruption.
>> >
>> >What would be required are special SIP commands which tell the far end
>> >Asterisk server when a phone goes off hook (for RX), and special SIP
>> >commands for applying and removing battery for the TX loop.
>> >
>> >For RX, SIP ATA's do not work like this. When a user goes off hook, a
>> >LOCAL dialtone is generated in the ATA, and only when the digits are
>> >dialed which match a route programmed into the ATA, does the ATA make
>> >connection with the Asterisk server. For TX, SIP ATA's provide battery
>> >all of the time and cannot be set up to interrupt battery on an ad-hoc
>> >basis.
>> >
>> >
>> >Even if all of the above were eventually sfound to be supported, App_rpt
>> >wuld have to undergo a significant rewrite to support SIP on the
>> >repeater port. A lot of things in app_rpt depend on the support Zaptel
>> >provides.
>> >
>> >
>> >
>> >
>> >Eric Fort wrote:
>> > > Steve, Yes I read your reply below...then I googled and composed this
>> > > query.  Why will it not work?  how can it work?
>> > >
>> > > (Worst case a patch to asterisk may come to mind since we are running
>> > > seperate channels for tx/rx anyway)
>> > >
>> > > All of the ata's below (the majority of the market) would appear to
>> >support
>> > > polarity reversal  now how can that feature be used with an arib
>> board
>> >to
>> > > place a remote node at the end of an ethernet cable across the
>> network
>> > > (where the controlling asterisk box is say on another continent)?
>> > >
>> > > cisco ata186 and ata188
>> > >
>> >
>> http://www.cisco.com/en/US/products/hw/gatecont/ps514/products_administration_guide_chapter09186a0080160f73.html#1021012
>>
>> > >
>> > >
>> > >
>> > > SIPURA SPA-3000
>> > > http://www.sipura.com/Documents/SipuraSPAUserGuidev2.0.9.pdf
>> > > also SPA-2000, SPA-2100, SPA-1001
>> > >
>> > >
>> > > ustarcom
>> > > http://www.utstar.com/Document_Library/0043.pdf
>> > >
>> > > HandyTone 286
>> > > http://www.grandstream.com/user_manuals/HandyTone.pdf
>> > >
>> > > Grandstream Handytone ATA-496
>> > > http://www.grandstream.com/user_manuals/HT-496.pdf
>> > >
>> > > Grandstream Handytone ATA-386
>> > > http://www.grandstream.com/user_manuals/HandyTone-386UserManual.pdf
>> > >
>> > > Grandstream Handytone ATA-488
>> > > http://www.grandstream.com/user_manuals/HT488UserManual.pdf
>> > >
>> > > Grandstream Handytone ATA-486
>> > > http://www.grandstream.com/user_manuals/HandyTone-486UserManual.pdf
>> > >
>> > >
>> > > Eric
>> > >
>> > >
>> > >
>> > > On 2/27/07, Stephen Rodgers < hwstar at rodgers.sdcoxmail.com> wrote:
>> > >>
>> > >> ATA's don't support the line signalling methods required by the ARIB
>> to
>> > >> indicate PTT and/or COR presence.
>> > >>
>> > >> Steve.
>> > >>
>> > >>
>> > >>
>> > >> David Craig wrote:
>> > >> > Can App_rpt be used with an ATA for a simplex or half duplex
>> remote
>> > >> base.
>> > >> > The example might be an Grandstream HandyTone 286 with the FXS
>> port
>> > >> > connected ARIB.
>> > >> >
>> > >> > I have a situation where I need a very small radio interface
>> and my
>> > >> > asterisk
>> > >> > box will be remote via a high speed connection.
>> > >> >
>> > >> >
>> > >> > Thanks for any help.
>> > >> >
>> > >> > David
>> > >> >
>> > >> >
>> > >> >
>> > >>
>> >------------------------------------------------------------------------
>> > >> >
>> > >> > _______________________________________________
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>> > >
>> > >
>> > >
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