![TLC LAPTOP GSM System User Manual Download Page 68](http://html1.mh-extra.com/html/tlc/laptop-gsm-system/laptop-gsm-system_user-manual_1121219068.webp)
___________________________________________________________________________________
LTGSM User Manual C23 Confidential
Gateways
Although a PMX system may act as a completely self-contained network, most will almost
certainly need to receive calls from and make calls to a wider network and the PSTN. In order
to achieve this, the system must have a connection to at least one gateway. The gateway will
take the SIP messaging used by PMX and relay it to other SIP-enabled devices or convert it
to traditional TDM (Time Division Multiplex) protocols such as DPNSS or DASS. The details
of any gateway can be added using PMX Administrator and routes assigned to determine
which numbers will be placed out via each gateway.
Gateways may be allocated to the system i.e. made available for use by all tenancies, or be
assigned for use by one specific tenancy only.
In order to configure a gateway, browse to ‘System Settings’ and follow the ‘Gateways’ link
from the ‘System Settings’ menu.
You will be presented with the list of gateways: