AudioCodes MSBG Series User Manual

Version 7.2 555 Mediant 1000B Gateway & E-SBC
User's Manual 26. Configuring Supplementary Services
8. After the call is disconnected by the PSAP, the PSAP sends a SIP BYE to the FXS
device, and the FXS device reverses the polarity of the line toward the tandem switch.
The following parameters need to be configured:

EnableDIDWink = 1

EnableReversalPolarity = 1

PolarityReversalType = 1

FlashHookPeriod = 500 (for 500 msec "hookflash" mid-call Wink)

WinkTime = 250 (for 250 msec signalling Wink generated by the FXS device after it
detects the line seizure)

EnableTransfer = 1 (for call transfer)

LineTransferMode = 1 (for call transfer)

WaitforDialTime = 1000 (for call transfer)

SwapTEl2IPCalled&CallingNumbers = 1

DTMFDetectorEnable = 0

MFR1DetectorEnable = 1

DelayBeforeDIDWink = 200 (for 200 msec) - can be configured in the range from 0
(default) to 1000.
Note: Modification of the WinkTime parameter requires a device reset.
The outgoing SIP INVITE message contains the following headers:
INVITE sip:Line@DomainName
From: <sip:*81977820#@sipgw>;tag=1c143
To: <sip:Line@DomainName>
Where:

Line = as configured in the Endpoint Phone Number Table

SipGtw = configured by the SIPGatewayName parameter

From header/user part = calling party number as received from the MF spill
The ANI and the pseudo-ANI numbers are sent to the PSAP either in the From and/or P-
AssertedID SIP header.
Typically, the MF spills are sent from the E911 tandem switch to the PSAP, as shown in
the table below:
Table 26-1: Dialed MF Digits Sent to PSAP
Digits of Calling Number Dialed MF Digits
8 digits "nnnnnnnn" (ANI) "KPnnnnnnnnST"
12 digits "nnnnnnnnnnnn" (ANI) "KPnnnnnnnnnnnnSTP"
12 digits ANI and 10 digits PANI "KPnnnnnnnnnnnnSTKPmmmmmmmmmmST"
two digits "nn" "KPnnSTP"
The MF KP, ST, and STP digits are mapped as follows:

* for KP

AudioCodes MSBG Series Specifications

General

Brand	AudioCodes
Model	MSBG Series
Category	Gateway
Language	English