SIP User's Manual 104 Document #: LTRT-68806
Mediant 2000 & TP-1610 & TP-260/UNI
Table 5-12: General Parameters (Advanced Parameters)
Parameter Description
IP Security
[SecureCallsFromIP]
 [0] Disable = gateway accepts all SIP calls (default).
 [1] Enable = gateway accepts SIP calls only from IP addresses
defined in the Tel to IP Routing table (refer to 'Tel to IP Routing Table'
on page 122). The gateway rejects all calls from unknown IP
addresses.
Note: Specifying the IP address of a Proxy server in the Tel to IP
Routing table enables the gateway to only accept calls originating from
the Proxy server and reject all other calls.
Filter Calls to IP
[FilterCalls2IP]
 [0] Don't Filter = Disabled (default)
 [1] Filter = Enabled
If the filter calls to IP feature is enabled, then when a Proxy is used, the
gateway first checks the TelÆIP Routing table before making a call
through the Proxy. If the number is not allowed (number isn't listed or a
Call Restriction routing rule of IP = 0.0.0.0 is applied), the call is
released.
Enable Digit Delivery to IP
[EnableDigitDelivery2IP]
 [0] Disable = Disabled (default).
 [1] Enable = Enable digit delivery to IP.
The digit delivery feature enables sending DTMF digits to the destination
IP address after the TelÆIP call is answered.
To enable this feature, modify the called number to include at least one
'p' character.The gateway uses the digits before the 'p' character in the
initial INVITE message. After the call is answered, the gateway waits for
the required time (# of 'p' * 1.5 seconds) and then sends the rest of the
DTMF digits using the method chosen (in-band or out-of-band).
Note: The called number can include several 'p' characters (1.5 seconds
pause). For example, the called number can be as follows: 1001pp699,
8888p9p300.
Enable Digit Delivery to Tel
[EnableDigitDelivery]
 [0] Disable = Disabled (default).
 [1] Enable = Enable Digit Delivery feature for the gateway (two stage
dialing)
The digit delivery feature enables sending DTMF digits to the gateway's
B-channel after the call is answered [line offhooked (FXS) or seized
(FXO)]. For IP-to-Tel calls, after answering the call, the gateway plays
the DTMF digits (of the called number) towards the phone line.
If the called number in IP-to-Tel call includes the characters 'w' or 'p', the
gateway places a call with the first part of the called number (before 'w'
or 'p') , and plays DTMF digits after the call is answered. If the character
'w' is used, the gateway waits for detection of dial tone before it starts
playing DTMF digits. For example, if the number '1007766p100' is
defined as the called number, the gateway places a call with 1007766 as
the destination number, then, after the call is answered, it waits for 1.5
seconds and plays the rest of the number (100) as DTMF digits.
Other examples: 1664wpp102, 66644ppp503, 7774w100pp200.
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