Clear-Com HX System Frames - Manual (Page 244)

10.2.2 Four-wire trunks
To configure four-wire trunks:
1) Open Hardware > Cards and Ports, then select the MVX card on the first matrix
where the trunks are to be configured.
2) Configure the required ports as Trunks.
3) Switch to the MVX card on the second matrix, and configure the required ports as
Trunks.
4) On the layout pane, ensure that the required systems layout is open
The systems layout should be automatically updated with the trunk information on
both matrices. The trunks have been added to the bottom of each matrix and the
port number should be shown.
5) To apply the configuration changes, Select Apply changes To System in the
System menu.
6) Open the File menu and select Save project or Save Project As to save the
updated project.
Note: User-configured trunk labels are ignored in Online mode and the default labels should be
accepted. When changing the trunking information between matrices all of the matrices in
the linked set should be reset. The option to reset matrices is available from the download
dialog.
10.2.3 IP directs and trunks
The Eclipse IVC-32 cards allow directs and trunks over IP network infrastructure. All IP
trunks and directs can be compared directly to four-wire trunks and directs. They
comprise:
• A single duplex audio channel
• A known start point and end point
Links have to be made over IP before the trunk/direct can be used.
One side calls the other to set up the link and is known as the caller. The other side
receiving the call checks and decides if it can set up the link – this is the recipient.
If a recipient is not reachable:
• The caller tries three times to establish call
• After it stops trying, a low level thread checks to see if it’s reachable again
• Calls will start to try again if the thread sees the recipient
Calls can be refused by the receiver, if:
• The caller is trying to use a non-existent user name
• The caller is using the wrong password
• The caller is not the expected port type (for example, Trunk calling a Panel)
• The call is refused three times, the caller stops calling
244 Eclipse EHX Software User Guide