Notes - Aastra OpenCom 510 User Manual

PBX Cascading
Please note:
The master system then initialises the slave system. This may involve transfer of
firmware (operating software) from the master system to the slave system. This
can take a few minutes.
7. Configure the system telephone connected to the slave system for testing pur-
poses in the Configurator. In the PBX Configuration: Ports: Upn dialogue,
click on one of the additionally displayed entries of the type Upn 1/m/n
(1: slave system, m: slot number, n: U
You can see that the initialisation has been completed from the display on the
system telephone connected to the slave system.

12.3.1 Notes

Observe the following when operating a cascaded PBX system:
■
All U , S and a/b ports of the slave system interface cards can be used with
pn 0
appropriate telephones. All features of system telephones on U
available without restriction.
■
The S ports of the slave system can also be used for trunk lines or for PBX net-
0
working (see PBX Networking starting on page 140).
■
It is not possible to operate a DECT base station on one of the U
slave system.
■
The ISDN-L1 reference clock signal is always transferred from the master to the
slave system and must be acquired from an S
port– on the master system. The master system therefore needs to be con-
nected to at least one ISDN trunk line.
If you change the type of slave system later on, the port set-
tings that have been made will be deleted.
Note: Changes to the configuration while initialising the
slave system may trigger error reports referring to the ongo-
ing initialisation.
Putting a Cascaded PBX into Operation
port number).
pn
port –or preferably an S
0
ports are
pn
ports of the
pn
-
2M
137