Version 7.2 1301 Mediant 800B Gateway & E-SBC
User's Manual 72. Configuration Parameters Reference
Parameter Description
messages received from User-type IP Groups and
that are sent to Server-type IP Groups.
SBC Remote Refer Behavior
configure voip > sbc settings > sbc-refer-bhvr
[SBCReferBehavior]
Global parameter that defines the handling of SIP
REFER requests. You can also configure this
functionality per specific calls, using IP Profiles
(IpProfile_SBCRemoteReferBehavior). For a detailed
description of the parameter and for configuring this
functionality in the IP Profiles table, see 'Configuring
IP Profiles' on page 436.
Note: If this functionality is configured for a specific IP
Profile, the settings of this global parameter is ignored
for calls associated with the IP Profile.
configure voip > sbc settings > sbc-xfer-
prefix
[SBCXferPrefix]
When the SBCReferBehavior is set to 1, the device,
while interworking the SIP REFER message, adds the
prefix "T~&R-" to the user part of the URI in the Refer-
To header. After this, the device can receive an
INVITE with such a prefix (the INVITE is sent by the
UA that receives the REFER message or 302
response). If the device receives an INVITE with such
a prefix, it replaces the prefix with the value defined
for the SBCXferPrefix parameter.
By default, no value is defined.
Note: This feature is also applicable to 3xx redirect
responses. The device adds the prefix "T~&R-" to the
URI user part in the Contact header if the
SBC3xxBehavior parameter is set to 1.
configure voip > sbc settings > sbc-3xx-bhvt
[SBC3xxBehavior]
Global parameter that defines the handling of SIP 3xx
redirect responses. You can also configure this
functionality per specific calls, using IP Profiles
(IpProfile_SBCRemote3xxBehavior). For a detailed
description of the parameter and for configuring this
functionality in the IP Profiles table, see 'Configuring
IP Profiles' on page 436.
Note: If this functionality is configured for a specific IP
Profile, the settings of this global parameter is ignored
for calls associated with the IP Profile.
configure voip > sbc settings >
enforce-media-order
[SBCEnforceMediaOrder]
Enables the device to include all previously negotiated
media lines within the current session ('m=' line) in the
SDP offer-answer exchange (RFC 3264).
[0] Disable (default)
[1] Enable
For example, assume a call (audio) has been
established between two endpoints and one endpoint
wants to subsequently send an
session. If the parameter is enabled, the endpoint
includes the previously negotiated media type (i.e.,
audio) with the new negotiated media type (i.e.,
image) in its SDP offer:
v=0
o=bob 2890844730 2890844731 IN IP4
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