How to make friends VoIP gateway CISCO SPA112 and PBX Panasonic NCP1000?

Question

Telephony

Good afternoon!
There is a station rus.panasonic.ru/discontinued/telecom_solutions/at...
And a gateway for 2 analog phones - https://www.cisco.com/c/en/us/products/unified-com...
Simple analog phones operating in tone mode.
Connected via SIP to the station to expand the number of subscribers, analogue subscribers have run out.
Dial plan, pickup group, everything is set up and working properly on the station.
But there is a problem... "FLASH" does not work, it is needed to transfer the call to another subscriber.
If you use "clacking" on the "hang up" button (we simulate a flash with a longer delay), then it seems to transfer the call, but as soon as you hang up, the transferred call fails.
The second problem, no commands generally react [*]0 , [*]41 - this is the interception of the group, the interception of the number.
In general, phones work only as dialers, without any "buns", but you need to intercept in a group, and transfer calls.
Where to look, what are the offers? Has anyone come across?

Answer 1

Flash not working

Try to turn the timers in the SPA112 settings.
It is necessary to correct the patterns of dialed numbers so that when you press these keys, the SPA112 immediately sends a call to the station. If the code is supplemented with a pound sign (#) at the end, will the translation / interception codes work?

Answer 2

They transfer everything to the station, but she does not want to go to any.
Status-Line: SIP/2.0 480 Temporarily Unavailable
Could it be that Panasonic's SIP has been truncated? That only calls, and nothing more.