Configuring VoIP Settings
4-48 41-001190-01 Rel. 1.1, Rev. 00
AastraLink Pro 160 Administrator Guide
From the VoIP menu, you can configure:
• “SIP Trunking” on page 4-48
• “SIP Direct Inward Dialing (DID)” on page 4-55
• “AastraLink Trunking” on page 4-58
The following paragraphs describe each of these types of VoIP configurations.
SIP Trunking
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 4-19 for more information.
Incoming SIP trunk calls
Call routing
The AastraLink Pro 160 automatically routes incoming SIP calls using the TO:
address in the header of the SIP message. If the address matches a Direct Inward
Dialing (DID) rule and results in a valid SIP extension, the call is routed directly
to that extension. If no match is found, the call is sent to the current incoming call
destination (for example, open or closed hours routing to auto-attendant, operator,
or user group).
