Version 5.8 485 October 2009
SIP User's Manual 9. IP Telephony Capabilities
For supporting the E911 service, used the following configuration parameter settings:
îš„ Enable911PSAP = 1 (also forces the EnableDIDWink and EnableReversalPolarity)
îš„ HookFlashOption = 1 (generates the SIP INFO hookflash message) or 4 for RFC
2833 telephony event
îš„ WinkTime = 700 (defines detection window of 50 to 750 msec for detection of both
winks - 250 msec wink sent by the PSAP for starting the device's dialing; 500 msec
wink during the call)
îš„ IsTwoStageDial = 0
îš„ EnableHold = 0
îš„ EnableTransfer = 0
• Use RFC 2833 DTMF relay:
♦ RxDTMFOption = 3
♦ TxDTMFOption = 4
♦ RFC2833PayloadType = 101
îš„ TimeToSampleAnalogLineVoltage = 100
îš„ WaitForDialTime = 1000 (default is 1 sec)
The device expects to receive the ANI number in the From and/or P-AssertedID SIP
header. If the pseudo-ANI number exists, it should be sent as the display name in these
headers.
Table 9-3: Dialed Number by Device Depending on Calling Number
Digits of Calling
Number (ANI)
Digits of Displayed Number Number Dialed MF Digits
8
"nnnnnnnn"
- MF dialed "KPnnnnnnnnST"
12
"nnnnnnnnnnnn"
None "KPnnnnnnnnnnnnSTP"
12
"nnnnnnnnnnnn"
10
"mmmmmmmmmm" (pANI)
"KPnnnnnnnnnnnnSTKPmmmmmmmmmmST"
2
"nn"
None "KPnnSTP"
1
"n"
- MF dialed "KPnST"
For example:
"From: <sip:8>@audiocodes.com>" generates
device MF spill of KP 8 ST
Notes:
îš„ For all other cases, a SIP 484 response is sent.
îš„ KP is for *.
îš„ ST is for #.
îš„ STP is for B.
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