Aastra AastraLink Pro 160, Administrator'S Manual

Page: 141 / 360

Configuring Network Settings
41-001190-02 Rev. 01, Rel. 1.2 4-31
Configuring AastraLink Pro 160 System and Network Parameters
Notes:
1. Aastra recommends accepting the RTP/RTCP Port Count default setting
of 20. Increasing the default setting beyond 20 may result in call
degradation or service outage.
2. When UPnP is enabled, then RTP/RTCP Port Count is the maximum
number of ports forwarded. Some UPnP router implementations limit the
number of ports that may be forwarded. If fewer ports are forwarded, then
the number of simultaneous calls supported by the AastraLink is restricted.
3. If UPnP is not enabled, then you should manually forward ports:
RTP Port Start through (RTP Port Start + RTCP Port Count -1) from the
public/external side of the network to the AastraLink. All ports for RTP
must be contiguous.
Configuring Remote Office Support
If you are installing and supporting Aastra IP phones at a remote site - for
example, a home office - you need to enable remote office support on the
AastraLink Pro 160.
Note the following information about configuring remote office support:
• The procedure for configuring remote office support varies slightly,
depending on whether or not you installed your AastraLink Pro 160 behind a
UPnP enabled/supported router. Refer to the
UPnP parameter description on
page 4-27 before you begin the procedure described in this section.
• You must initially configure phones intended for remote locations at the
central office before deployment.
For complete instructions on configuring your Aastra IP phones for remote
deployment, see the following in this guide:
— Appendix A, “Remote Office Configuration of the IP Phone
(Phone-Side)”
— Appendix B, “Remote Office Configuration of the AastraLink Pro 160
(Server-Side)”