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1Sip Trunk Group - Services

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The following fields are displayed:

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1Sip Trunk Group - Services

Parameter

Description

DNS Support Type

Indicates whether to use the DNS server for just A-record lookups, or for full NAPTR/SRV/A lookup as specified in RFC3263.

  • A-only
  • A-srv-naptr

Preconditions

 Indicates level of preconditions support for incoming (only) requests. For precondition support of outgoing requests, see Transmit Preconditions flag below.
  • None – (default)
  • Required
  • Supported
  • Transparent

Transmit Preconditions

Indicates level of preconditions support for outgoing request/response.
  • none – When set to "none",  SBC does not add SIP precondition attributes in SDP of outgoing request even if attributes are present in the SDP of incoming requests.
  • required – Use this option to add SIP precondition attributes in SDP of outgoing request even if attributes are NOT present in the SDP of incoming requests. If precondition attributes are added by SBC, the local preconditions are set to ‘met’ and remote preconditions are set to ‘not-met’.
  • supported – (default) Use this option to ensure backward compatibility behavior. Use this option to add SIP precondition attributes in SDP of outgoing request only if attributes are present in the incoming request.

Precondition Intwk Using183

(This flag is for specific call flows and is not intended for generic use)

Enable this flag to locally generate first 183 responses for preconditions interworking before egressing INVITE. If disabled, these responses are dropped.

  • Disabled (default)
  • Enabled
Note

Do not enable Precondition Intwk Using183 when End-to-End Prack is configured.


Honor Sdp Clock Rate

Enable this flag to map the DTMF Payload Type (PT) with the clock rate of the preferred or selected payload type for audio.

If the flag is disabled, all DTMF PTs except 8,000 Hz (both send and receive) are dropped.

  • Disabled
  • Enabled (default)

Sip Ars Profile

Specifies the name of the SIP ARS (Address Reachability Service) profile.

Disconnect Treatment Profile

Specifies the name of the Disconnect Treatment Profile.

Emergency Call Profile

Specifies the name of the Emergency Call Profile.

Sip Security Profile

Specifies the name of the SIP Security Profile.
Dynamic Blacklist ProfileSpecifies the name of the Dynamic Blacklist Profile.

Emergency Call Handling Mode

Use this parameter to specify how to handle emergency calls.

  • emergencyRegRequired – Use this option to reject the emergency session establishment without an emergency registration.

    Note

    “Use Psx Route For Emergency Call” must also be enabled to use this option.

  • emergencyRegSupported – Use this option when emergency registrations are supported, but emergency session establishment is possible without an emergency registration.

    Note

    “Use Psx Route For Emergency Call” must also be enabled to use this option.

  • none (default) – Use this option when not using emergency registrations to perform PSX dip for registered user for emergency calls.

    Note

    “Use Psx Route For Emergency Call” must also be enabled to use this option.

  • rejectWith380 – Use this option to reject an INVITE request with ‘380 Alternate Service’ response code from Ingress leg when the request is identified as emergency request and redirection flag is set to redirection mode.

See Emergency Registration for emergency registration functionality.

JSRC Bandwidth Reservation

If disabled at global level, the Trunk Group configuration will not be applied. The options are:

  • Disabled (default)
  • Enabled

Remote EPreservation

If disabled at global level, the Trunk Group configuration will not be applied. The options are:

  • Disabled (default)
  • Enabled

SIP JIP Profile

Specifies the name of the Sip Jip Profile.

Note

This parameter is only supported when the SBC is configured to use an external PSX.

SIP Jurisdiction Support

Enable this flag to allow insertion of JIP parameter in SIP trunk group ingress and egress headers.

  • Disabled (default)
  • Enabled
Note

This flag is only supported when the SBC is configured to use an external PSX.


Transparency ProfileSpecifies the name of the Transparency Profile to associate with this SIP Trunk Group.
Use Previous Learned IP Address

Enable this flag to latch on Previous Learned IP Address before performing SRV DNS Lookups, while sending mid dialog SIP requests

Resolved Dns Prioritization

Use this parameter to control DNS prioritization for the specified SIP trunk group.

  • alwaysPrioritize – The SBC sends the requests in a dialog to the IP address where the INVITE was sent and the contact in the response message is an FQDN that resolves into multiple IP addresses.
    • doNotPrioritize – (default) The SBC latches on the first resolved IP address

    .

    Dialog Event Notification SupportedUse this flag to support notification for a SUBSCRIBE with dialog event in this Trunk Group.
    Colocated Pand EcscfUse this flag to support co-locating P-CSCF and E-CSCF on the ingress Trunk Group.

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