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_administratio...
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@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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