User`s manual

Table Of Contents
Mediant 2000 & TP-1610 & TP-260
SIP User's Manual 64 Document #: LTRT-68805
6. From the Silence Suppression drop-down list, enable or disable the silence
suppression option for the coder you selected.
Note: For G.729 it is also possible to select silence suppression without adaptations.
7. Repeat steps 2 to 6 for the second to fifth coders (optional).
8. Click the Submit button to save your changes.
9. To save the changes so they are available after a power fail, refer to Section 5.9.2 on
page 124.
Notes:
Only the ptime of the first coder in the defined coder list is declared in
INVITE / 200 OK SDP, even if multiple coders are defined.
If the coder G.729 is selected and silence suppression is enabled (for this
coder), the gateway includes the string ‘annexb=no’ in the SDP of the
relevant SIP messages. If silence suppression is set to ‘Enable w/o
Adaptations’, ‘annexb=yes’ is included. An exception to this logic is when
the remote gateway is a Cisco device (IsCiscoSCEMode).
5.5.2 Advanced Parameters
Use this submenu to configure the following gateway’s advanced control protocol
parameters:
CDR and Debug
Miscellaneous Parameters
Supplementary Services
5.5.3 Number Manipulation Tables
The VoIP gateway provides four Number Manipulation tables for incoming and outgoing
calls. These tables are used to modify the destination and source telephone numbers so
that the calls can be routed correctly.
The Manipulation Tables are:
Destination Phone Number Manipulation Table for IPÆTel calls
Destination Phone Number Manipulation Table for TelÆIP call
Source Phone Number Manipulation Table for IPÆTel calls
Source Phone Number Manipulation Table for TelÆIP calls
Note: Number manipulation can be performed either before or after a routing
decision is made. For example, you can route a call to a specific trunk
group according to its original number, and then you can remove/add a
prefix to that number before it is routed. To control when number
manipulation is done, set the ‘RouteModeIP2Tel’ and the
‘RouteModeTel2IP’ parameters. For information on these parameters, refer
to Table 6-10 on page 180.