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I sent this once already but it didnt show up in my
mailbox so I am not sure if ever made it to the list. If it did, my
apologies.
I have an * system and an nbx. My plan is to
use several grandstream 286s and plug the the phone cords into the NBX's
analog FXO card. It works fine but after I make a call, the port stays
open on the NBX and I cannot make another call for around five minutes or I have
to manually reset the port on the NBX.
I assume the Grandstream is still sending a busy
signal to the NBX so the port wont close. I know you can do things with
Zap channels to monitor the line but is it possible with SIP? I am pretty
sure that this needs to be implemented on the 286 or the NBX itself and not
*. Here is what 3com says about it. Maybe someone can help without
having to buy the graybar device listed in the article.
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SOLUTION OFFERING FOR Telco LINES NOT PROVIDING DISCONNECT:
- This
solution may not work in all implementations, and most likely does NOT
work for PBX Analog Extensions coming into the NBX, as they are not actual
phone company lines, they do not go into recordings or produce re-order
tones
- This solution is a workaround to be attempted, with the
explicit understanding that 3Com Corporation does NOT endorse this product
in any way, but prefers to provide a solution for
continued use of the
NBX system:
The disconnect product is available through GrayBar (800
825 5517).Please shop around and get the unit you feel may be best for
your situation.
Product Manufacturer: Electronic Tele-Communications,
Inc.
Model: MAX Terminator Disconnect Unit
"Scans for progress tones
- dial tone, reorder tone, busy signal - and generates a disconnect signal
within seconds of recognizing the tone. The disconnect signal is passed
down the line to the peripheral equipment, allowing proper operation.
Prevents voice mail systems from recording annoying telephone tones after
a caller hangs up. Also helps alleviate tied up phone lines.
- Provides
disconnect detection for phone systems and peripherals
- Helps maintain
accurate call count statistics
- Services 12 lines; up to 120 lines
with rack-mount unit
- Progress tone scanner
- Stand alone
chassis
- Rack-mounted cards (card file accommodates up to 10
cards)
- Easy installation"
GrayBar Catalog # and Description
(GrayBar 800 825 5517 for pricing and availability - ask for similar
products too)
ETC - 8208 - SN12 Standard Chassis Unit (12 lines) 11.2 "
long x 8.5" wide x 1.5" deep or rack mount for more lines:
ETC - 1144 -
CN12 - Rack Card (12 lines per card)
ETC - 1145 -
AC - Rack Card File -
accommodates up to 120 lines (10 cards)
this thing costs over a
grand! |
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