MediaPack 
Analog Fast Track Guide  26  Document #: LTRT-59805 
¾  To configure basic H.323 parameters, take these 7 steps: 
1.  If the MediaPack is connected to a router with NAT enabled, perform the following 
procedure. If it isn’t, leave the ‘NAT IP Address’ field undefined. 
•  Determine the “public” IP address assigned to the router (by using, for instance, router 
Web management). Enter this public IP address in the ‘NAT IP Address’ field. 
•  Enable the DMZ configuration on the residential router for the LAN port where the 
MediaPack gateway is connected. This enables unknown packets to be routed to the 
DMZ port. 
2.  When working with a Gatekeeper, set ‘Working with Gatekeeper’ field, under ‘H.323 
Parameters’, to ‘Yes’ and enter the IP address of the primary Gatekeeper in the field 
‘Gatekeeper IP Address’. When no Gatekeeper is used, the internal routing table is used to 
route the calls. 
3.  Leave parameter ‘Enable Annex D/T.38 FAX Relay’ at its default unless your technical 
requirements differ. 
4.  Select the coder (i.e., vocoder) that best suits your VoIP system requirements. The default 
coder is: G.723.1 30 msec. To program the entire list of coders you want the MediaPack to 
use, refer to the MediaPack User’s Manual. 
5.  Map outgoing calls to IP addresses (when Gatekeeper isn’t used) by completing these steps: 
a.  Click the arrow button next to the ‘Tel to IP Routing Table’ label; the ‘Tel to IP Routing’ 
screen opens. 
Any telephone number whose destination number matches the prefix defined in the 
‘Destination Phone Prefix’ field and whose source number matches the prefix defined in 
the adjacent ‘Source Phone Prefix‘ field, is sent to the IP address entered in the ‘IP 
Address’ field. 
b.  Click the Submit button; the ‘Tel to IP Routing’ table is automatically updated. 
c.  Click Quick Setup; you’re returned to the ‘Quick Setup’ screen. 
For more information on the ‘Tel to IP Routing’ table refer to the MediaPack H.323 
User’s Manual. 
6.  Allocate MediaPack endpoints (analog lines) and their corresponding phone numbers to 
incoming IP calls by completing these steps: 
a.  Click the arrow button next to the ‘Endpoint Phone Number’ label; the ‘Endpoint Phone 
Numbers’ screen opens. 
b.  Enter the number of a channel, starting with 1, (or a group of channels), under the 
‘Channel(s)’ column (for example 1-4 for the first 4 endpoints). 
c.  Assign each channel a phone number (for a group of channels, define the first number 
in an ordered sequence). For an example of connecting two MP-118 devices, refer to 
Section  3.4.4 on page 29. 
d.  Click the Submit button; the ‘Endpoint Phone Number’ table is automatically updated. 
e.  Click Quick Setup; you’re returned to the ‘Quick Setup’ screen. 
7.  On the main menu bar, click the Maintenance button; the 'Maintenance Actions' screen is 
displayed. From the 'Burn to FLASH' drop-down list, select 'Yes', and then click the Reset 
button; the MediaPack applies the changes and restarts. This takes approximately two 
minutes to complete. When the MediaPack has finished restarting, the Power and 
Ready 
LEDs on the front panel are lit green. 
 
 
Note:  H.323 users should continue with Section  3.4.4, "Example of Connecting Two 
MP-118 Devices" on page 29. 
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