Aastra Telecom AastraLink Pro 160 - Manual (Page 186)

Configuring VoIP Settings
4-76 41-001190-02 Rev. 01, Rel. 1.2
AastraLink Pro 160 Administrator Guide
SIP Trunking
The AastraLink Pro 160 supports single and multiple SIP trunking. You can
configure a single SIP trunk to communicate and connect the AastraLink Pro to a
service provider’s switch to make outgoing PBX calls, OR you can configure
multiple SIP trunks to allow the outgoing PBX call to route over the least cost
routing (LCR) trunk to the service provider’s switch. For more information about
single and multiple SIP trunks see,
“Single and Multiple SIP Trunks” on
page 4-84 .
You enable SIP trunking on the AastraLink Pro 160 in order to support
internetworking between your Aastra IP phones, and the SIP devices on a VoIP
service provider network. On the AastraLink Pro, you can configure up to 10 SIP
trunks for your network. See
Figure 4-6 .
Note: When you enable SIP trunking, note the following important information:
— You can configure up to 10 SIP trunks between your AastraLink Pro 160
IP phone network and a service provider network.
— Depending on whether or not you enable UPnP support on your
AastraLink device (that is, whether or not your AastraLink is installed
behind a UPnP enabled router), you may need to manually specify the
router RTP port start/range used for external SIP calls, and forward this
port range and the SIP port (5060) from the public/external Internet
gateway/router to the AastraLink local IP address. Refer to
“Editing
Local Service Settings” on page 4-26 for more information.