This section lists SIP Common IP Attributes Call Transfer Flags details.

Command Syntax

% set profiles signaling ipSignalingProfile <profile_name> commonIpAttributes callTransferFlags 
	forceReRouteViaPsxQuery <disable | enable> 
	handleIpAddressesNotPresentInNetworkSelectorTableNst 
		rejectCall 
		routeViaDefaultZoneIptg 
		routeViaDefaultiptg 
		routeViaTransferringIptg>

Command Parameters

Call Transfer Flags

Parameter

Description

forceReRouteViaPsxuery

Enable this flag to allow SBC to perform a PSX query for new routes instead of using the IP address received in the Refer-To header.

  • disabled (default) – When this flag is disabled, the SBC does one of following:

    • If the IP address in the Refer-To header is zero or matches the SBC signaling IP address, the SBC performs a PSX query for new routes.
    • If IP address in Refer-To header does not match SBC signaling IP address and it is present in SBC Network Selector table, the SBC sends an INVITE message to the IPTG selected from the Network Selector table.
    • If IP address in the Refer-To header does not match SBC signaling IP address and is not present in the SBC Network Selector table, SBC handles the transfer via the Handle IP Addresses Not Present In Network Selector Table NST field (see below).

  • enabled – Enable flag to cause SBC to always perform a PSX query for new routes, regardless of the IP address received in the Refer-To header.

handleIpAddressesNotPresentInNetworkSelectorTableNst

 

Use this parameter to define how to handle a transferred call when the SBCdoes not perform a PSX query for new routes and the IP address from the Refer-To header is not present in the Network Selector table. Options are:
  • rejectCall – The SBC always rejects the call transfer.
  • routeViaDefaultZoneIptg – The SBC sends the call transfer INVITE out from the Default Zone's IPTG.
  • routeViaDefaultiptg – This option is not applicable at this time.
  • routeViaTransferringIptg (default) – The SBC sends the call transfer INVITE back out the transferring IPTG (i.e. the IPTG on which the REFER request arrived).

 

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