Display Filter Reference: Q.931
Protocol field name: q931
Versions: 1.0.0 to 3.4.5
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| Field name | Description | Type | Versions |
|---|---|---|---|
| q931.accept_data_flow_control | Accept data with flow control mechanism | Boolean | 2.0.0 to 3.4.5 |
| q931.accept_data_net_independent_clock | Accept data with network independent clock | Boolean | 2.0.0 to 3.4.5 |
| q931.avaya_display | Avaya Display | Character string | 2.0.0 to 3.4.5 |
| q931.bearer_capability.data | Data | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.bearer_capability.data_bits | Data bits | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.default_packet_size | Default packet size | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.duplex | Duplex | Boolean | 2.0.0 to 3.4.5 |
| q931.bearer_capability.intermediate_rate | Intermediate rate | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.mode | Mode | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.modem_type | Modem type | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.packet_window_size | Packet window size | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.parity | Parity | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.rate_multiplier | Rate multiplier | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.stop_bits | Stop bits | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.user_rate | User rate | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.bearer_capability.window_size | Window size | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.call_ref | Call reference value | Sequence of bytes | 1.0.0 to 3.4.5 |
| q931.call_ref_flag | Call reference flag | Boolean | 1.0.0 to 3.4.5 |
| q931.call_ref_len | Call reference value length | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.call_state | Call state | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.call_state.data | Data | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.called_party_number.digits | Called party number digits | Character string | 1.0.0 to 3.4.5 |
| q931.calling_party_number.digits | Calling party number digits | Character string | 1.0.0 to 3.4.5 |
| q931.cause.data | Data | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.cause.recommendation | Recommendation | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.cause_call.condition | Condition | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.cause_call.diagnostic | Diagnostic | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.cause_call.message_type | Message type | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.cause_call.rec_timer | Timer | Character string | 2.0.0 to 3.4.5 |
| q931.cause_call.rejection_reason | Rejection reason | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.cause_call.user_specific_diagnostic | User specific diagnostic | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.cause_location | Cause location | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.cause_value | Cause value | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.channel.data | Data | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.channel.dchan | D-channel indicator | Boolean | 1.0.0 to 3.4.5 |
| q931.channel.element_type | Element type | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.channel.exclusive | Indicated channel | Boolean | 1.0.0 to 3.4.5 |
| q931.channel.interface_id | Interface ID | Unsigned integer, 4 bytes | 2.0.0 to 3.4.5 |
| q931.channel.interface_id_present | Interface identifier present | Boolean | 1.0.0 to 3.4.5 |
| q931.channel.interface_type | Interface type | Boolean | 1.0.0 to 3.4.5 |
| q931.channel.map | Number/map | Boolean | 1.0.0 to 3.4.5 |
| q931.channel.number | Channel number | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.channel.selection | Information channel selection | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.channel.slot_map | Slot map | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.coding_standard | Coding standard | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.congestion_level | Congestion level | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.connected_number.digits | Connected party number digits | Character string | 1.0.0 to 3.4.5 |
| q931.cug_index_code | CUG index code | Character string | 2.0.0 to 3.4.5 |
| q931.cug_indication | CUG indication | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.cumulative_transit_delay | Cumulative transit delay | Unsigned integer, 2 bytes | 2.0.0 to 3.4.5 |
| q931.data | Data | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.date_time | Date/time | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.date_time.invalid | Date/time: Invalid length | Label | 2.0.0 to 3.4.5 |
| q931.disc | Protocol discriminator | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.display_information | Display information | Character string | 2.0.0 to 3.4.5 |
| q931.extended_audiovisual_characteristics | Extended audiovisual characteristics identification | Unsigned integer, 1 byte | 1.4.0 to 3.4.5 |
| q931.extended_high_layer_characteristics | Extended high layer characteristics identification | Unsigned integer, 1 byte | 1.4.0 to 3.4.5 |
| q931.extension.reason | Reason for redirection | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.extension_condition | Condition | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.extension_condition_type | Type | Boolean | 2.0.0 to 3.4.5 |
| q931.extension_ind | Extension indicator | Boolean | 1.0.0 to 3.4.5 |
| q931.extension_ind_new_status | New status | Unsigned integer, 1 byte | 1.10.0 to 3.4.5 |
| q931.extension_ind_preference | Preference | Unsigned integer, 1 byte | 1.10.0 to 3.4.5 |
| q931.fast_select | Fast select | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.high_layer_characteristics | High layer characteristics identification | Unsigned integer, 1 byte | 1.4.0 to 3.4.5 |
| q931.high_layer_compat.data | Data | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.incomplete_ie | Incomplete IE in the 1st segment | Label | 2.0.0 to 3.4.5 |
| q931.information_element | Information element | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.information_element.unknown | Unknown information element | Label | 2.0.0 to 3.4.5 |
| q931.information_element_len | Length | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.information_rate.incoming | Incoming information rate | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.information_rate.minimum_incoming | Minimum incoming information rate | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.information_rate.minimum_outgoing | Minimum outgoing information rate | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.information_rate.outgoing | Outgoing information rate | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.information_transfer_capability | Information transfer capability | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.information_transfer_rate | Information transfer rate | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.insufficient_info_element | Insufficient information element | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.interpretation | Interpretation | Unsigned integer, 1 byte | 1.4.0 to 3.4.5 |
| q931.invalid_length | Invalid length | Label | 2.0.0 to 3.4.5 |
| q931.keypad_facility | Keypad facility | Character string | 2.0.0 to 3.4.5 |
| q931.layer_1 | Layer 1 | Boolean | 2.0.0 to 3.4.5 |
| q931.layer_1_in_band_negotiation | Layer 1 in-band negotiation | Boolean | 2.0.0 to 3.4.5 |
| q931.layer_ident | Layer identification | Unsigned integer, 1 byte | 1.2.0 to 3.4.5 |
| q931.locking_codeset | Locking codeset | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.maintenance_message_type | Maintenance message type | Unsigned integer, 1 byte | 1.2.0 to 3.4.5 |
| q931.maximum_end_to_end_transit_delay | Maximum end-to-end transit delay | Unsigned integer, 2 bytes | 2.0.0 to 3.4.5 |
| q931.message_originator | Message originator | Boolean | 2.0.0 to 3.4.5 |
| q931.message_segment | Message segment | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.message_type | Message type | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.missing_info_element | Missing information element | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.mode_of_operation | mode of operation | Boolean | 2.0.0 to 3.4.5 |
| q931.more_data | More data | Label | 2.0.0 to 3.4.5 |
| q931.multiple_frame_establishment | Multiple frame establishment | Boolean | 2.0.0 to 3.4.5 |
| q931.negotiation_is_done | Negotiation is done | Boolean | 2.0.0 to 3.4.5 |
| q931.netid | Network identification | Character string | 2.0.0 to 3.4.5 |
| q931.netid.facility_specification | Network-specific facility specification | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.netid.length | Network identification length | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.netid.plan | Network identification plan | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.netid.type | Type of network identification | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.network_service | Network service | Boolean | 2.0.0 to 3.4.5 |
| q931.notification_description | Notification description | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.number_type | Number type | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.numbering_plan | Numbering plan | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.out_band_negotiation | Out-band negotiation | Boolean | 2.0.0 to 3.4.5 |
| q931.packet_size.backward_value | Backward value | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.packet_size.forward_value | Forward value | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.party_category | Party category | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.party_subaddr | Subaddress | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.party_subaddr.odd_even | Odd/even indicator | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.party_subaddr.type | Type of subaddress | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.pl_binary_confirmation | Confirmation | Boolean | 2.0.0 to 3.4.5 |
| q931.pl_modulus | Modulus | Boolean | 2.0.0 to 3.4.5 |
| q931.pl_request | Request | Boolean | 2.0.0 to 3.4.5 |
| q931.pl_window_size.backward_value | Backward value | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.pl_window_size.forward_value | Forward value | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.presentation_ind | Presentation indicator | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.presentation_method_protocol_profile | Presentation method of protocol profile | Unsigned integer, 1 byte | 1.4.0 to 3.4.5 |
| q931.progress_indicator.data | Data | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.progress_indicator.description | Progress description | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.progress_indicator.location | Location | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.protocol_negotiation | Protocol negotiation | Boolean | 2.0.0 to 3.4.5 |
| q931.rate_adaption_header | Rate adaption header | Boolean | 2.0.0 to 3.4.5 |
| q931.reassembled.length | Reassembled Q.931 length | Unsigned integer, 4 bytes | 1.4.0 to 3.4.5 |
| q931.reassembled_in | Reassembled Q.931 in frame | Frame number | 1.0.0 to 3.4.5 |
| q931.redirecting_number.digits | Redirecting party number digits | Character string | 1.0.0 to 3.4.5 |
| q931.repeat_indicator | Repeat indicator | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.requested_end_to_end_transit_delay | Requested end-to-end transit delay | Unsigned integer, 2 bytes | 2.0.0 to 3.4.5 |
| q931.restart_indicator | Restart indicator | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.reverse_charging_ind | Reverse charging indication | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.screening_ind | Screening indicator | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.segment | Q.931 Segment | Frame number | 1.0.0 to 3.4.5 |
| q931.segment.count | Segment count | Unsigned integer, 4 bytes | 1.6.0 to 3.4.5 |
| q931.segment.error | Defragmentation error | Frame number | 1.0.0 to 3.4.5 |
| q931.segment.first | First segment | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.segment.multipletails | Multiple tail fragments found | Boolean | 1.0.0 to 3.4.5 |
| q931.segment.not_first | Not first segment | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.segment.overlap | Segment overlap | Boolean | 1.0.0 to 3.4.5 |
| q931.segment.overlap.conflict | Conflicting data in fragment overlap | Boolean | 1.0.0 to 3.4.5 |
| q931.segment.toolongfragment | Segment too long | Boolean | 1.0.0 to 3.4.5 |
| q931.segment_type | Segmented message type | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.segments | Q.931 Segments | Label | 1.0.0 to 3.4.5 |
| q931.send_data_flow_control | Send data with flow control mechanism | Boolean | 2.0.0 to 3.4.5 |
| q931.send_data_net_independent_clock | Send data with network independent clock | Boolean | 2.0.0 to 3.4.5 |
| q931.sending_complete | Sending complete | Label | 2.0.0 to 3.4.5 |
| q931.signal | Signal | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.transfer_mode | Transfer mode | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.transit_delay | Transit delay | Unsigned integer, 2 bytes | 2.0.0 to 3.4.5 |
| q931.uil1 | User information layer 1 protocol | Unsigned integer, 1 byte | 1.0.0 to 3.4.5 |
| q931.uil2 | User information layer 2 protocol | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.uil2_info | User-specified layer 2 protocol information | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.uil3 | User information layer 3 protocol | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.uil3_additional | Additional layer 3 protocol information | Unsigned integer, 2 bytes | 2.0.0 to 3.4.5 |
| q931.user.bytes | User information | Sequence of bytes | 2.0.0 to 3.4.5 |
| q931.user.len | User information | Unsigned integer, 4 bytes | 2.0.0 to 3.4.5 |
| q931.user.protocol_discriminator | Protocol discriminator | Unsigned integer, 1 byte | 2.0.0 to 3.4.5 |
| q931.user.string | User information | Character string | 2.0.0 to 3.4.5 |
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