In this section:

This section specifies the Ingress Flag parameters for both H323 and SIP Trunk Groups.

To View and Edit Flags

On SBC main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Ip Signaling Profile > Ingress Ip Attributes > Flags. The Flags window is displayed.

DEFAULT_H323

On the Flags window, choose the Ip Signaling Profile as DEFAULT_H323 to view the Flags for H323 Trunk Group.

Trunk Provisioning - Ingress Ip Attributes - Flags

 

The following fields are displayed:

Ingress Ip Attributes - H323 Flags

 

Parameter

Description

Convert Progress To Alert

Set this flag to convert Progress messages to Alert messages when communicating to endpoints that have difficulty with Progress messages. The options are:

  • Disable (default)
  • Enable
Dont Send Facility Message

Set this flag to prevent sending Facility messages to endpoints that do not tunnel and have difficulty processing Facility messages. The options are:

  • Disable (default)
  • Enable

NOTE:  Enabling this flag on the ingress leg may result in no media establishment for H.323 calls with discrete H.245 (no H.245 tunneling) due to H.245 socket collision. To avoid this issue, either disable this flag or ensure the H.245 signaling port address (actual hex value) associated with this setting is greater than its peer.

Refuse Fast Start Proposal

When this flag is set, SBC does not include FastStart proposal in early media calls. Instead, it relies on H.245 procedure to complete media setup. When cleared, SBC always includes fast start proposal in SETUP message for early media calls. The options are:

  • Disable (default)
  • Enable
Send Fast Start Response In Cp

When this parameters is used, the SBC sends a FastStart response message in Call Proceeding messages. The options are:

  • Disable (default)
  • Enable

DEFAULT_SIP

On the Flags window, choose the Ip Signaling Profile as DEFAULT_SIP to view the Flags for SIP Trunk Group.

Trunk Provisioning - Ingress Ip Attributes - Flags

 

The following fields are displayed:

Ingress Ip Attributes - Flags

 

Parameter

Description

Sip181Supported

Enable flag to allow the SBC to support 'SIP 181 Call Is Being Forwarded' messages in the backward direction on the ingress trunk group. The options are:

  • Disable (default)
  • Enable
Sip182Supported

Enable flag to allow the SBC to support SIP 182 Queued messages in the backward direction on the ingress trunk group. The options are:

  • Disable (default)
  • Enable
Map Called Party Category In PSig Info Header

Enable flag to map Called Party Category parameter to outgoing SIP P-Sig-Info header. The P-Sig-Info header is a customer-specific SIP header used to convey ISUP information in SIP messages. The options are:

  • Disable (default)
  • Enable
No Sdp In 180 SupportedBy default, the SBC includes SDP in outbound 180 messages. When enabled, the SBC does not include SDP in outbound 180 messages. It converts the 180 message to a 183 message instead. When disabled the SBCincludes SDP in outbound 180 messages. The options are:
  • Disable (default)
  • Enable
Registration Expires in Expires Header Controls what the SBC signals back to a peer when it has received a REGISTER message from that peer. When enabled, SBCinserts the Expires header in the message. When disabled, SBCdoes not insert the Expires header. The options are:
  • Disable (default)
  • Enable
Send183On Initiating Disconnect Treatment

Enable flag to send a 183 message on initiating a disconnect treatment. The options are:

  • Disable (default)
  • Enable
Send Sdp In200Ok If18x Reliable

Enable flag to send SDP in final 200 OK response messages when provisional 18x responses are reliable. The options are:

  • Disable (default)

  • Enable

 This flag only applies to 200 OK sent for an early offer.


Send Sdp In Subsequent18x Enable flag to send SDP in subsequent 18x response messages. When disabled, the SBCmay not send SDP in subsequent 18x response messages. The options are:
  • Disable (default)
  • Enable
Send TLSConnection Failure Response

 Enable flag to report TLS connection failure and respond with '408 Request timeout' message and Warning header instead of '504 Server timeout'. The options are:

  • Disable (default)
  • Enable
Supress 183For3xx Redirect Response

 Do not send 183 without SDP upon receiving 3xx Redirect Response. The options are:

  • Disable (default)
  • Enable
Supress 183Without Sdp

 Never send 183 without SDP. The options are:

  • Disable (default)
  • Enable

See SDP Support topic for details of suppress183For3xxRedirectResponse and suppress183WithoutSdp behavior.


Set-cut-through-indication-in-OBCI

Enable flag to set the BIT-H of BCI parameters in the outgoing 18x message to allow the node to temporarily halt call set-up and play tones or announcements, or both, and collect additional in-band information from the calling user before routing the call further. The options are:

  • Disable (default)

  • Enable

Send Updated SDPin200OkEnable this flag to send any SDP update before the answer (i.e., when the SDP changes between the last response sent and a 200 OK) on the ingress side in the 200 OK without using a reInvite. An SDP update is required at the ingress side if any change occurs in the SDP between 18x and 200 OK on the egress leg.
  • Disable (default)- The SBC sends the last sent SDP in 200 OK and updates it using Re-INVITE.
  • Enable - The SBC sends updated SDP on the ingress side in 200 OK for INVITE. This option avoids such issues as when the INVITE/Re-INVITE gets challenged for authentication or when the endpoints change SRTP keys for every new SDP offer.

Make the required changes and click Save at the right hand bottom of the panel to save the changes made.

 

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