Expert Documentation

Chapter 7
1. By OMC (Expert View):
System > Voice over IP > VoIP: Parameters > General tab
2. Review/modify the followings attributes:
Number of VoIP-Trunk Channels
VoIP Protocol
Quality of IP service
Enter the number of channels used for SIP trunking
Select SIP
Select the QoS type used for the remote SIP gateway
VoIP calls
3. Do not check the "RTP Direct" box
4. Confirm your entries
5. If the VoIP Protocol has been switched from H323 to SIP, you are requested to reset the
VoIP boards.
7.6.3.1.2 Configuring the Gateway Timers (Optional)
Refer to Configuring H323 Gateway - Hardware configuration - Configuring the Gateway
timeouts (optional)
1. By OMC (Expert View):
System -> Voice on IP -> VoIP: Parameters -> Gateway tab
2. The parameters have standardized values, do not change them without prior analysis
RAS Request Timeout
Connect Timeout
Gateway Presence Timeout
Connect Timeout
Maximum authorized response time for a RAS
request ("Registration, Admission, Status")
made to the gatekeeper; between 10 and 180;
default value = 20
Maximum authorized time interval between initialization
and connection; value between 10
and 1200; default value = 500
Determines the presence of a remote Gateway;
value between 10 and 600; default value = 50
Maximum authorized time interval between initialization
and connection; value between 10
and 1200; default value = 500
H.245 Request Timeout Maximum authorized response time for an
H.245 request; value between 10 and 60; default
value = 40
SIP: End of dialing Timeout Default value = 5
The "End of Dialing table used" box can be checked or not (optional).
The "End of Dialing table used" is checked to define the end of dialing detection. The system
uses the end of dialing prefix table to ascertain the length (number of digits) of the numbers
transmitted. A counter, equal to or superior than 0, is associated with each prefix. When a
prefix has not been configured in this table, the system uses a reference counter (see
paragraph Configuring the “End of Dialing Table” ).
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