# ACU_CONN_IN

This topic describes:

- ACU_CONN_IN protocol variants

- ACU_CONN_IN macro descriptions and Q.931 IE

#### Purpose

Signals an incoming call.

#### Conn_id

A currently unused ID.

## ACU_CONN_IN protocol variants

The following table lists the variants under which each macro is supported for this primitive. In this table, x indicates both NT and TE sides.

Macro | 4 E S S | E 1 0 | N I 2 | D M S | E T S I | V N 6 | H K G | A U S T E L 1 | N T T | K O R E A | T A I W A N | Q S I G | D P N S S | T 1 6 0 7
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Acu_conn_in_a_called_nb, Acu_conn_in_called_nb_size | x | x | x | x | x | x | x | x | x | x | x | x | x | x
Acu_conn_in_a_called_nb_sub, Acu_conn_in_called_nb_sub_size |  |  |  |  |  |  |  |  | x |  |  |  |  | x
Acu_conn_in_a_calling_nb, Acu_conn_in_calling_nb_size | x | x | x | x | x | x | x | x | x | x | x | x | x | x
Acu_conn_in_a_calling_nb2, Acu_conn_in_calling_nb2_size |  |  |  |  |  | x |  |  |  |  |  |  |  |
Acu_conn_in_a_calling_nb_sub, Acu_conn_in_calling_nb_sub_size |  |  |  |  |  |  |  |  | x |  |  |  |  | x
Acu_conn_in_a_calling_name, Acu_conn_in_calling_name_size |  |  |  | x |  |  |  |  |  |  |  |  |  |
Acu_conn_in_a_display, Acu_conn_in_display_size |  |  | x | x | x | x |  | x | x | x | x |  |  | x
Acu_conn_in_a_display_list |  |  | x | x | x | x |  | x | x | x | x |  |  | x
Acu_conn_in_a_ext_parms |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_a_facility, Acu_conn_in_facility_size |  |  |  |  | x | x |  |  |  | x | x | x |  |
Acu_conn_in_a_layer_1_info |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_a_orig_called_nb |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_cfnr |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_count |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_plan |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_pres |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_reason |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_screen |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_size |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_called_nb_type |  |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_orig_line_info | x |  |  | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_a_pcs_user, Acu_conn_in_pcs_user_size |  |  |  |  |  | x |  |  |  |  |  |  |  |
Acu_conn_in_a_ph_num |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_a_q931, Acu_conn_in_q931_size | x | x | x | x | x | x | x | x | x | x | x | x | x | x
Acu_conn_in_a_redir_nb, Acu_conn_in_redir_nb_size | x | x | x | x | x | x |  |  |  |  |  |  |  |
Acu_conn_in_a_ss_cnip_name, Acu_conn_in_ss_cnip_name_size |  |  |  |  |  |  |  |  |  |  |  | x |  |
Acu_conn_in_a_uui, Acu_conn_in_uui_size | x | x | x |  | x | x | x |  | x | x | x |  |  |
Acu_conn_in_call_ref_length |  |  | x |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_call_ref_value |  |  | x |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_called_nb_plan | x | x | x | x | x | x |  |  |  | x | x |  |  | x
Acu_conn_in_called_nb_sub_odd_even |  |  |  |  |  |  |  |  | x |  |  |  |  |
Acu_conn_in_called_nb_sub_type |  |  |  |  |  |  |  |  | x |  |  |  |  |
Acu_conn_in_called_nb_type | x | x | x | x | x | x |  | x |  | x | x |  |  | x
Acu_conn_in_calling_nb2_pres |  |  |  |  |  | x |  |  |  |  |  |  |  |
Acu_conn_in_calling_nb2_screen |  |  |  |  |  | x |  |  |  |  |  |  |  |
Acu_conn_in_calling_nb2_type |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_calling_nb_plan |  |  | x | x | x |  | x |  |  |  |  |  |  | x
Acu_conn_in_calling_nb_pres | x | x | x | x | x | x | x | x | x | x | x | x |  | x
Acu_conn_in_calling_nb_screen | x | x | x | x | x | x | x | x | x | x | x | x |  | x
Acu_conn_in_calling_nb_sub_odd_even |  |  |  |  |  |  |  |  | x |  |  |  |  |
Acu_conn_in_calling_nb_sub_type |  |  |  |  |  |  |  |  | x | x | x |  |  |
Acu_conn_in_calling_nb_type | x | x | x | x | x | x | x | x |  | x | x | x |  | x
Acu_conn_in_chani_nai |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_data_bits |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_data_chani | x | x | x | x | x | x | x | x | x | x | x | x | x | x
Acu_conn_in_data_chani_excl |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_data_chani_nb |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_data_chani_tab |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_data_chani_tab_nai |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_dest_call_appear |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_ext_parms_lgth |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_ext_parms_nb |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_interworking |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_parity |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_pcs_user_protocol |  |  |  |  |  | x |  |  |  |  |  |  |  |
Acu_conn_in_ph_rate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_progress_descr_x[i] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_progress_description |  |  |  |  | x | x |  |  |  | x | x |  |  | x
Acu_conn_in_progress_ind_nb |  |  |  |  |  |  |  |  |  | x | x |  |  | x
Acu_conn_in_progress_loc_x[i] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_progress_location |  |  |  |  | x | x |  |  |  | x | x |  |  | x
Acu_conn_in_redir_nb_plan | x | x | x | x | x |  |  |  |  |  |  |  |  |
Acu_conn_in_redir_nb_pres | x | x | x | x | x | x |  |  |  |  |  |  |  |
Acu_conn_in_redir_nb_reason | x | x | x | x | x | x |  |  |  |  |  |  |  |
Acu_conn_in_redir_nb_screen | x | x | x | x | x | x |  |  |  |  |  |  |  |
Acu_conn_in_redir_nb_type | x | x | x | x | x | x |  |  |  |  |  |  |  |
Acu_conn_in_semi_permanent_circuit |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_sending_complete |  |  |  |  | x | x | x |  |  | x | x | x | x | x
Acu_conn_in_service |  |  |  |  |  |  |  |  |  |  |  |  | x |
Acu_conn_in_service_list_id |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_ss_cnip_name_active |  |  |  |  |  |  |  |  |  |  |  | x |  |
Acu_conn_in_ss_cnip_name_pres |  |  |  |  |  |  |  |  |  |  |  | x |  |
Acu_conn_in_stop_bits |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_syn_asyn |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_user_rate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_uui_protocol |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acu_conn_in_x_display_nb |  |  | x | x | x | x |  | x | x | x | x |  |  | x
Acu_conn_in_x_display_size[i] |  |  | x | x | x | x |  |  |  | x | x |  |  | x
Acu_conn_in_x_display_total_size |  |  | x | x | x | x |  |  |  | x | x |  |  | x
Acu_conn_in_x_display_type[i] |  |  | x | x | x | x |  |  |  | x | x |  |  | x
Acu_conn_in_x_p_display[i] |  |  | x | x | x | x |  |  |  | x | x |  |  | x

## ACU_CONN_IN macro descriptions and Q.931 IE

Macro | Description | Q.931 IE
--- | --- | ---
Acu_conn_in_a_called_nb, Acu_conn_in_called_nb_size | Pointer to the called number. | Called party number + called party subaddress
Acu_conn_in_a_called_nb_sub, Acu_conn_in_called_nb_sub_size | Pointer to (and size of) buffer containing called subaddress. | Calling party subaddress
Acu_conn_in_a_calling_nb, Acu_conn_in_calling_nb_size | Pointer to the calling number. | Calling party number + calling party subaddress
Acu_conn_in_a_calling_nb2, Acu_conn_in_calling_nb2_size | Pointer to (and size of) buffer containing second calling number. | Calling party number + calling party subaddress
Acu_conn_in_a_calling_nb_sub, Acu_conn_in_calling_nb_sub_size | Pointer to (and size of) buffer containing calling subaddress. | Calling party subaddress
Acu_conn_in_a_calling_name, Acu_conn_in_calling_name_size | Pointer to (and size of) buffer containing calling name. | Calling name
Acu_conn_in_a_display, Acu_conn_in_display_size | Pointer to (and size of) buffer containing ISDN display information (optional). | Display
Acu_conn_in_a_display_list | Pointer to display structure. | Display
Acu_conn_in_a_ext_parms | Pointer to buffer containing extended parameters. | Network specific facility
Acu_conn_in_a_facility, Acu_conn_in_facility_size | Pointer to (and size of) buffer containing ISDN facility information (optional). | Facility
Acu_conn_in_a_layer_1_info | Pointer to structure containing layer 1 information. | Low layer information
Acu_conn_in_a_orig_called_nb | Pointer to the original called number. | Original called number
Acu_conn_in_orig_called_nb_cfnr | Original called number call forward no reply indicator (Boolean). | Original called number
Acu_conn_in_orig_called_nb_count | Original called number redirection count. | Original called number
Acu_conn_in_orig_called_nb_plan | Original called number plan. See Plan values for a list of valid values. | Original called number
Acu_conn_in_orig_called_nb_pres | Original called number presentation indicator. Valid values include: N_PRES_ALLOWED N_PRES_RESTRICTED N_PRES_NOT_AVAILABLE | Original called number
Acu_conn_in_orig_called_nb_reason | Original called number redirection reason. See Redirecting reason values for a list of valid values. | Original called number
Acu_conn_in_orig_called_nb_screen | Original called number screening indicator. See Screening indicator values for a list of valid values. | Original called number
Acu_conn_in_orig_called_nb_size | Size of the original called number. | Original called number
Acu_conn_in_orig_called_nb_type | Original called number type. See Number type values for a list of valid values. | Original called number
Acu_conn_in_orig_line_info | Originating line information (0xFF means no information available). | Originating line information
Acu_conn_in_a_pcs_user, Acu_conn_in_pcs_user_size | Pointer to (and size of) buffer containing ISDN PCS-to-user and user-to-PCS information. See PCS-user information elements for more information on this IE. | PCS-user
Acu_conn_in_a_ph_num | Alias for Acu_conn_in_a_calling_nb. | Low layer information
Acu_conn_in_a_q931, Acu_conn_in_q931_size | Pointer to (and size of) buffer containing raw data of incoming Q.931 message. | Does not map to an IE.
Acu_conn_in_a_redir_nb, Acu_conn_in_redir_nb_size | Pointer to (and size of) buffer containing redirecting number. | Redirecting number
Acu_conn_in_a_ss_cnip_name, Acu_conn_in_ss_cnip_name_size | Pointer to (and size of) buffer containing calling name identification presentation (CNIP) name. | CNIP
Acu_conn_in_a_uui, Acu_conn_in_uui_size | Pointer to (and size of) buffer containing ISDN user-to-user information (optional). | User-user
Acu_conn_in_call_ref_length | Length of call reference value. | Call reference
Acu_conn_in_call_ref_value | Call reference value and call reference flag. | Call reference
Acu_conn_in_called_nb_plan | Called number plan. See Plan values for a list of valid values. | Called party number
Acu_conn_in_called_nb_sub_odd_even | Called subaddress odd/even. Valid values include: SUBADDRESS_ODD: Odd number of address signals SUBADDRESS_EVEN: Even number of address signals | Called party subaddress
Acu_conn_in_called_nb_sub_type | Called subaddress number type. Valid values include: SUBADDRESS_TYPE_NSAP: NSAP SUBADDRESS_TYPE_USER: User specified | Called party subaddress
Acu_conn_in_called_nb_type | Called number type. See Number type values for a list of valid values. | Called party number
Acu_conn_in_calling_nb2_pres | Second calling number presentation. Allowed values include: N_PRES_ALLOWED: Presentation allowed N_PRES_RESTRICTED: Presentation restricted N_PRES_NOT_AVAILABLE: Presentation not available | Calling party number
Acu_conn_in_calling_nb2_screen | Second calling number screening indicator. See Screening indicator values for a list of valid values. | Calling party number
Acu_conn_in_calling_nb2_type | Second calling number type. See Number type values for a list of valid values. | Calling party number
Acu_conn_in_calling_nb_plan | Calling number plan. See Plan values for a list of valid values. | Calling party number
Acu_conn_in_calling_nb_pres | Calling number presentation. Allowed values include: N_PRES_ALLOWED: Presentation allowed N_PRES_RESTRICTED: Presentation restricted N_PRES_NOT_AVAILABLE: Presentation not available | Calling party number
Acu_conn_in_calling_nb_screen | Calling number screening indicator. See Screening indicator values for a list of valid values. | Calling party number
Acu_conn_in_calling_nb_sub_odd_even | Called subaddress odd/even. Allowed values include: SUBADDRESS_ODD: Odd number of address signals SUBADDRESS_EVEN: Even number of address signals | Calling party subaddress
Acu_conn_in_calling_nb_sub_type | Calling subaddress number type. Valid values include: SUBADDRESS_TYPE_NSAP: NSAP SUBADDRESS_TYPE_USER: User specified | Calling party subaddress
Acu_conn_in_calling_nb_type | Calling number type. See Number type values for a list of valid values. | Calling party number
Acu_conn_in_chani_nai | NAI. | Channel identification
Acu_conn_in_data_bits | Number of data bits for V.110 and V.120 services. Available values include: ACU_DATA_BIT_5: 5 data bits ACU_DATA_BIT_7: 7 data bits ACU_DATA_BIT_8: 8 data bits | Not used.
Acu_conn_in_data_chani | Data channel to use (B1, B2, ..., D). | Channel identification
Acu_conn_in_data_chani_excl | Channel IDs are preferred (OFF) or exclusive (ON). | Channel identification
Acu_conn_in_data_chani_nb | Number of channel IDs in the chani_list field. If no channel IDs, use 0. | Channel identification
Acu_conn_in_data_chani_tab | Channel ID. | Channel identification
Acu_conn_in_data_chani_tab_nai | NAI. | Channel identification
Acu_conn_in_dest_call_appear | Destination call appearance. | Not used.
Acu_conn_in_ext_parms_lgth | Total length of buffer containing extended parameters. | Not used.
Acu_conn_in_ext_parms_nb | Number of parameters in buffer containing extended parameters. | Not used.
Acu_conn_in_interworking | Interworking indication: ON: Interworking occurred OFF: No interworking | Not used.
Acu_conn_in_parity | Parity for V.110 and V.120 services. Available values include: ACU_ODD: odd parity ACU_EVEN: even parity ACU_NO_PARITY: no parity | Low layer information
Acu_conn_in_pcs_user_protocol | Protocol discriminator for the pcs_user information element. See PCS-user information elements for more information on this IE. | PCS-user
Acu_conn_in_ph_rate | Physical rate (for all services). | Low layer information
Acu_conn_in_progress_descr_x[i] | Description for information element i. See Progress description values for a list of valid values. | Progress indicator
Acu_conn_in_progress_description | Description for information element 0. See Progress description values for a list of valid values. | Progress indicator
Acu_conn_in_progress_ind_nb | Number of progress indication information elements. | Progress indicator
Acu_conn_in_progress_loc_x[i] | Location of information element i. See Location values for a list of valid values. | Progress indicator
Acu_conn_in_progress_location | Location of information element 0. See Location values for a list of valid values. | Progress indicator
Acu_conn_in_redir_nb_plan | Redirecting number plan. See Plan values for a list of valid values. | Redirecting number
Acu_conn_in_redir_nb_pres | Redirecting number presentation. Allowed values include: N_PRES_ALLOWED: Presentation allowed N_PRES_RESTRICTED: Presentation restricted N_PRES_NOT_AVAILABLE: Presentation not available | Redirecting number
Acu_conn_in_redir_nb_reason | Reason for redirection. See Redirecting reason values for a list of valid values. | Redirecting number
Acu_conn_in_redir_nb_screen | Redirecting number screening indicator. See Screening indicator values for a list of valid values. | Redirecting number
Acu_conn_in_redir_nb_type | Redirecting number type. See Number type values for a list of valid values. | Redirecting number
Acu_conn_in_semi_permanent_circuit | Semi-permanent circuit. |
Acu_conn_in_sending_complete | Indicates if the sending-complete information element has been received (ON/OFF). | Sending complete
Acu_conn_in_service | Service requested by the remote. See Service values for a list of valid values.) | bc + llc + hlc
Acu_conn_in_service_list_id | Service list ID associated with the selected services list. | bc + llc + hlc
Acu_conn_in_ss_cnip_name_active | Indicates calling name identification presentation (CNIP) supplementary service should be invoked. | CNIP
Acu_conn_in_ss_cnip_name_pres | Calling name identification presentation mode. Allowed values include: N_PRES_ALLOWED: Presentation allowed N_PRES_RESTRICTED: Presentation restricted N_PRES_NOT_AVAILABLE: Presentation not available | CNIP
Acu_conn_in_stop_bits | Number of stop bits for V.110 and V.120 services. Available values include: ACU_STOP_BIT_1: 1 stop bit ACU_STOP_BIT_1_5: 1.5 stop bits ACU_STOP_BIT_2: 2 stop bits | Low layer information
Acu_conn_in_syn_asyn | Synchronous/asynchronous for V.110 and V.120 services. Available values include: ACU_SYN: Synchronous mode ACU_ASYN: Asynchronous mode | Low layer information
Acu_conn_in_user_rate | User rate for V.110 and V.120 services. See User rate values for a list of valid values. | Low layer information
Acu_conn_in_uui_protocol | UUI protocol discriminator value. See UUI protocol discriminator values for a list of valid values. | User-user
Acu_conn_in_x_display_nb | Number of present occurrences. | Display
Acu_conn_in_x_display_size[i] | Size of occurrence i (optional). | Display
Acu_conn_in_x_display_total_size | Total size of the stored strings. | Display
Acu_conn_in_x_display_type[i] | Type of display i. | Display
Acu_conn_in_x_p_display[i] | Pointer to occurrence i. | Display