Sip Diversion Header; Transmit Direction - Patton electronics SmartNode Series Software Configuration Manual

SmartWare Software Configuration Guide
The push back mechanism over ISDN (using ECT) and SIP (using REFER) works independently of the pro-
tocol that invoked the call-transfer. For example, the same scenario also works if the phone in the home office
is connected to an FXS port.
The push-back mechanism can be configured on each interface separately. Per default push-back is enabled for
ISDN and SIP interfaces. You only have to change the configuration if you don't want internally looped calls to
be pushed back to the network. The configuration command [no] call-transfer accept configures if an incom-
ing call-transfer request (e.g. ECT or REFER) shall be accepted. The configuration command [no] call-
transfer emit configures if a call reaching the device over this interface and leaving the device over this interface
shall be pushed back to the network, i.e. if a call-transfer request (ECT or REFER) shall be sent.
The following procedure disables the push-back mechanism on the ISDN interface connected to the PBX. No
ECT invocation is sent when a call is detected that is looped internally.
Step
1
node (ctx-ip)[ctx- name ]# interface isdn
<if-name>
2
node (if-isdn)[if- name ]# no call-transfer
emit
The following procedure disables the push-back mechanism on a SIP interface. No REFER message is sent
when a call is detected that is looped internally.
Step
1
node (ctx-ip)[ctx- name ]# interface sip
<if-name>
2
node (if-sip)[if- name ]# no call-transfer
emit

SIP Diversion Header

SmartWare supports now the SIP Diversion Header for transmitting redirecting information over SIP accord-
ing to draft-levy-sip-diversion-08. Sending and receiving of the header can be configured independent of each
other. Even the Diversion Header standard would allow appending a header for each diversion occurred in the
network, SmartWare only records the last and the first diversion. If only one Diversion Header is attached to
the INVITE request, then it represents the last diversion.

Transmit Direction

For enabling sending of the Diversion Header, an outgoing address translation expression must be configured
on the sip interface. This expression specifies how to create the Diversion URI of the header. As User Part of
the URI the Calling Redirecting number will always be taken. The user must configure the Host Part that is set
per default to 'none'. Setting the Host Part to 'none' disables transmission of the Diversion Header.
SIP interface configuration task list
Command
Command
33 • SIP interface configuration
Purpose
Go to the ISDN interface, for which you want to
disable the push back mechanism.
Disable the push back mechanism
Purpose
Go to the SIP interface, for which you want to dis-
able the push back mechanism.
Disable the push back mechanism
389