DSP determines the number of simultaneous connections, which depends on the codec, the connection between the SIP phone and the DPT/APT, and the SIP lines.
Read the Feature manuals
Attached are a few examples of h323 connections.
In a Maintenance Console you have IP-GW16 protocol trace, that way you can monitor and compare both connections, what is missing.
Of course you also have a VoIP voice test Tool.
Check default signal ports on both side , Shelf Properity-Vitual...
To begih with, pull all the cards out, a couple of cm ( LCOT, EXT, OPB), leave only PWR and MPR
If the MPR is going up , review the list of errors , then return one by one card to the slot (you don't have to shutdown the PBX).
If the MPR does not up , try replacing the PWR or MPR, very rarely...
When connecting 2 PBXs, set the 8290 to "Private" mode (Q-sig Master or Slave) and you have to replace the receiving and transmitting wire pairs.
And you also need to have two numbering plans ( Other PBX).
If there are free slots, it may be simpler to use the TDA0290 card, which you can...
ingy500
Maybe he means bit 0D-5 ??
This is activated when two PBXs are interconnected, page 35
There are no stupid questions, there are only stupid answers!https://files.engineering.com/getfile.aspx?folder=30ad319c-4dc9-44a9-b20e-b00980c223d1&file=S37._PBX_to_PBX_by_SIP_2015-1001A.pptx
Try with Port Mirroring on TDE side
There are no stupid questions, there are only stupid answers!https://files.engineering.com/getfile.aspx?folder=718f8b6b-3379-446b-8a7f-b460f9ce2d14&file=TDE100_200seminar080Other-Functions-1_.pdf
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