Routing Script Tutorial: Terminating Calls

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Introduction

In release 2.8, it is now possible to terminate a call through the routing scripts. The reason code must be specified in

params[:bridge][:reason]. The :terminate hash must be created and copied into params:

 terminate = {}
 params[:terminate] = terminate

The following fields can then be set in :terminate:

• :sip_header
• :contacts # list of contacts as described in the redirection section
• :isup_raw
• :isup_raw_variant
• :redirecting_number
• :redirecting_number_noa
• :redirecting_number_npi
• :redirecting_number_presentation
• :redirecting_number_reason
• :redirecting_number_counter
• :redirecting_number_indicator
• :original_called_number
• :original_called_number_noa
• :original_called_number_npi
• :original_called_number_presentation
• :original_called_number_reason
• :original_called_number_counter

Reason values

Check here for Termination Reason Cause codes:

Termination Reason Cause codes

Example to refuse an incoming call leg.

 raise RoutingException, :no_route

Reason cause strings available inside routing scripts:

List of Q.850 reason causes

 :unallocated_number
 :no_route_to_network
 :no_route_to_destination
 :send_special_tone
 :misdialled_trunk_prefix
 :channel_unacceptable
 :call_awarded_in_established_channel
 :preemption
 :reattempt
 :qor_ported_number
 :normal_call_clearing
 :user_busy
 :no_user_responding
 :no_answer_from_user
 :subscriber_absent
 :call_rejected
 :number_changed
 :redirection
 :exchange_routing_error
 :non_selected_user_clearing
 :destination_out_of_order
 :address_incomplete
 :facility_rejected
 :response_to_status_enquiry
 :normal_unspecified
 :no_circuit_available
 :network_out_of_order
 :frame_mode_out_of_service
 :frame_mode_connection_operational
 :temporary_failure
 :switching_equipment_congestion
 :access_information_discarded
 :requested_circuit_not_available
 :precedence_call_blocked
 :resource_unavailable
 :quality_of_service_not_available
 :requested_facility_not_subscribed
 :outgoing_calls_barred
 :outgoing_calls_barred_within_cug
 :incoming_calls_barred
 :incoming_calls_barred_within_cug
 :bearer_cap_not_authorized
 :bearer_cap_not_available
 :inconsistency_access_info
 :service_not_available
 :bearer_cap_not_implemented
 :channel_type_not_implemented
 :requested_facility_not_implemented
 :only_restricted_digital_info
 :service_not_implemented
 :invalid_call_reference
 :channel_does_not_exist
 :call_identity_does_not_exist
 :call_identity_in_use
 :no_call_suspended
 :call_has_been_cleared
 :user_not_member_of_cug
 :incompatible_destination
 :non_existant_cug
 :invalid_transit_network
 :invalid_message_unspecified
 :mandatory_ie_missing
 :message_type_non_existent
 :message_not_compatible_with_call_state
 :ie_non_existent
 :invalid_ie_content
 :msg_not_compatible_with_call_state
 :recovery_on_timer_expiry
 :parameter_non_existent_passed_on
 :message_with_non_recognized_parameters_discarded
 :protocol_error
 :interworking_unspecified

List of toolpack reason causes

 :toolpack_normal                       or :normal
 :toolpack_resource_error               or :resource_error
 :toolpack_timeout                      or :timeout
 :toolpack_no_route                     or :no_route
 :toolpack_call_collision               or :call_collision
 :toolpack_sync_drop                    or :sync_drop
 :toolpack_signaling_error              or :signaling_error
 :toolpack_locally_rejected             or :locally_rejected
 :toolpack_interface_not_available      or :interface_not_available
 :toolpack_reset_in_progress            or :reset_in_progress
 :toolpack_adapter_reject               or :adapter_reject
 :toolpack_missing_or_invalid_ie        or :missing_or_invalid_ie
 :toolpack_incoming_only                or :incoming_only
 :toolpack_system_configuration_changed or :system_configuration_changed
 :toolpack_resource_no_more_available   or :resource_no_more_available
 :toolpack_incompatible_media           or :incompatible_media
 :toolpack_resource_allocation_failed   or :resource_allocation_failed
 :toolpack_data_path_not_available      or :data_path_not_available
 :toolpack_local_congestion             or :local_congestion
 :toolpack_authorization_required       or :authorization_required
 :toolpack_call_divert_is_not_allowed   or :call_divert_is_not_allowed

List of SIP reason causes

Reason causes starting with a digit must use the following syntax (can't use : as prefix).

 '300_multiple_choices'
 '301_moved_permanently'
 '302_moved_temporarily'
 '305_use_proxy'
 '380_alternative_service'
 '400_bad_request'
 '401_unauthorized'
 '402_payment_required'
 '403_forbidden'
 '404_not_found'
 '405_method_not_allowed'
 '406_not_acceptable'
 '407_proxy_authentication_required'
 '408_request_timeout'
 '409_conflict'
 '410_gone'
 '413_request_entity_too_large'
 '414_request_URI_too_long'
 '415_unsupported_media'
 '416_unsupported_URI_scheme'
 '420_bad_extension'
 '421_extension_required'
 '422_session_timer_too_small'
 '423_interval_too_brief'
 '429_referrer_identity_error'
 '480_temporary_unavailable'
 '481_call_or_transaction_does_not_exist'
 '482_loop_detected'
 '483_too_many_hops'
 '484_address_incomplete'
 '485_ambiguous'
 '486_busy_here'
 '487_request_terminated'
 '488_not_acceptable_here'
 '489_bad_event'
 '491_retry_after'
 '500_server_internal_error'
 '501_not_implemented'
 '502_bad_gateway'
 '503_service_unavailable'
 '504_server_timeout'
 '505_version_unsupported'
 '513_message_too_large'
 '600_busy_everywhere'
 '603_decline'
 '604_not_exist_anywhere'
 '606_not_acceptable'