> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/creating-an-h-248-configuration.md). # Creating an H.248 Configuration > **Applies to:** Tmedia 3.0, 3.2, 3.3 After you create the necessary VoIP and TDM NAPs, you can create an H.248 configuration. 1- Click **H248** in the navigation panel ![Create H248 0](https://docs.telcobridges.com/w/images/7/7e/Create_H248_0.png) 2- Create the new configuration: * Select a **transport protocol type** * Enter a **public IP address** * Enter a **private IP address** * Click **Create** ![Create H248 1](https://docs.telcobridges.com/w/images/8/85/Create_H248_1.png) 3- For 1+1 systems, open the "Advanced Parameters" and then "Behavior" section and make sure this option is checked: No failover service changes 4- Verify that the **"TbgwH248Cfg was successfully created"** message appears ![Create H248 2](https://docs.telcobridges.com/w/images/8/8c/Create_H248_2.png) NOTE: After creating the H.248 Configuration the Advanced Parameters will split into two sections to indicate which parameters will cause active calls to drop. These are labled as [H.248 Service Affecting Parameters](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/h-248-service-affecting-parameters/README.md) Please reference the complete list of Paramters below before adding [Adding a media gateway controller (MGC)](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/adding-a-media-gateway-controller-mgc/README.md) and [Associating the NAPs with the H.248 configuration](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/associating-naps-with-an-h-248-configuration/README.md) ![Edit H248 0](https://docs.telcobridges.com/w/images/9/94/Edit_H248_0.png) ### Full List of Parameters * [Enabled](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/enabled/README.md) **Transport Protocol** * [Transport Protocol Type](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/transport-protocol-type/README.md) * [Public IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/public-ip-address/README.md) * [Use IP interface](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/use-ip-interface/README.md) * [Local IP Address](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/local-ip-address/README.md) * [Local Port to Receive for Text Encoding](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/local-port-to-receive-for-text-encoding/README.md) * [IP ToS value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/ip-tos-value/README.md) **Advanced Parameters** * Behavior * [Relay Unknown H248 Parameters](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/relay-unknown-h248-parameters/README.md) * [Compact H248 Descriptor Headers](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/compact-h248-descriptor-headers/README.md) * [Send Transaction Response Acks](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/send-transaction-response-acks/README.md) * [Send Transaction Response Acks Immediately](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/send-transaction-response-acks-immediately/README.md) * [Send Transaction Pending Automatically](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/send-transaction-pending-automatically/README.md) * [No Remote Response](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/no-remote-response/README.md) * [Null Terminating H248 Message](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/null-terminating-h248-message/README.md) * [No Only Ephemeral](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/no-only-ephemeral/README.md) * [Loose H248 Message Decoding](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/loose-h248-message-decoding/README.md) * [Transparent SDP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/transparent-sdp/README.md) * [No SCTP Send Acknowledge](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/no-sctp-send-acknowledge/README.md) * [No failover service changes](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/no-failover-service-changes/README.md) * [Observe default CAS events](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/observe-default-cas-events/README.md) * Analog display * [FSK Variant](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/fsk-variant/README.md) * [FSK Level](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/fsk-level/README.md) * [Mark Bytes sent before FSK message](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/mark-bytes-sent-before-fsk-message/README.md) * [Seizure Bytes Used before Mark Bytes](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/seizure-bytes-used-before-mark-bytes/README.md) * [Maximum Number of Retransmissions](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/maximum-number-of-retransmissions/README.md) * [Serialize null context commands](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/serialize-null-context-commands/README.md) * [Allow wildcard in service change](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/allow-wildcard-in-service-change/README.md) * [Switch to Passthrough on tdm/ec=OFF](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/switch-to-passthrough-on-tdm-ec-off/README.md) * [IP Lawful Interception ToS value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/ip-lawful-interception-tos-value/README.md) * [Maximum Number of TDM Terminations](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/maximum-number-of-tdm-terminations/README.md) * [Maximum Number of Ephemeral Terminations](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/maximum-number-of-ephemeral-terminations/README.md) * [Default MEGACO version](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/default-megaco-version/README.md) * [Maximum Number of DNS Pending Requests](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/maximum-number-of-dns-pending-requests/README.md) * [Ephemeral Termination Identifier Root](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/ephemeral-termination-identifier-root/README.md) * [Ephemeral Termination Identifier Maximum Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/ephemeral-termination-identifier-maximum-value/README.md) * [Number of Worker Threads](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/number-of-worker-threads/README.md) * Profile * [Enabled](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/enabled/README.md) * [Profile Name](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/profile-name/README.md) * [Profile Version](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/profile-version/README.md) * Timers * [Default Sent Transaction Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/default-sent-transaction-timer-value/README.md) * [Maximum Sent Transaction Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/maximum-sent-transaction-timer-value/README.md) * [Provisional Reply Transaction Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/provisional-reply-transaction-timer-value/README.md) * [Saved Replied Transaction Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/saved-replied-transaction-timer-value/README.md) * [Dialing Start Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dialing-start-timer-value/README.md) * [Dialing Short Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dialing-short-timer-value/README.md) * [Dialing Long Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dialing-long-timer-value/README.md) * [Dialing Duration Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dialing-duration-timer-value/README.md) * [Restart Timer Value to Retry Controller Association](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/restart-timer-value-to-retry-controller-association/README.md) * [Local Response Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/local-response-timer-value/README.md) * [Inactivity Timer Value](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/inactivity-timer-value/README.md) **Path** ``` /configurations/@[configuration_name]/h248_stacks/@[h248_stack] ``` **Parameters (text)** ``` /configurations/@[configuration_name]/h248_stacks/@[h248_stack] enabled = true naps = [ ] /configurations/@[configuration_name]/h248_stacks/@[h248_stack]/advanced_parameters allow_wildcard_in_service_change = true default_megaco_version = 2 ephemeral_termination_identifier_maximum_value = 4294967295 ephemeral_termination_identifier_root = "IP/" maximum_number_of_dns_pending_requests = 5 maximum_number_of_ephemeral_terminations = 2048 maximum_number_of_retransmissions = 11 maximum_number_of_tdm_terminations = 2048 serialize_null_context_commands = false switch_to_passthrough_on_tdm_ec_off = true /configurations/@[configuration_name]/h248_stacks/@[h248_stack]/advanced_parameters/behavior compact_h248_descriptor_headers = false loose_h248_message_decoding = false no_only_ephemeral = false no_remote_response = false no_sctp_send_acknowledge = false no_warm_service_change = false null_terminating_h248_message = false relay_unknown_h248_parameters = false send_transaction_pending_automatically = false send_transaction_response_acks = false send_transaction_response_acks_immediately = true transparent_sdp = true /configurations/@[configuration_name]/h248_stacks/@[h248_stack]/advanced_parameters/profile profile_enabled = false profile_name = "" profile_version = "" /configurations/@[configuration_name]/h248_stacks/@[h248_stack]/timers default_sent_transaction_timer = "500 milliseconds" dialing_duration_timer = "5 seconds" dialing_long_timer = "15 seconds" dialing_short_timer = "5 seconds" dialing_start_timer = "30 seconds" inactivity_timer = "30 seconds" local_response_timer = "10 seconds" maximum_sent_transaction_timer = "4 seconds" provisional_reply_transaction_timer = "6 seconds" restart_timer_value_to_retry_controller_association = "30 seconds" saved_replied_transaction_timer = "30 seconds" /configurations/@[configuration_name]/h248_stacks/@[h248_stack]/transport_protocol ip_interface = "" ip_tos_value = 0 local_ip_address = "@[address_number]" local_port_to_receive_for_text_encoding = 2944 public_ip_address = "@[address_number]" transport_protocol_type = "UDP" use_ip_interface = false /configurations/@[configuration_name]/h248_stacks/@[h248_stack]/transport_protocol/sctp_parameters checksum_type = "AUTODETECT" maximum_number_of_association_per_instance = 5 maximum_number_of_init_cookie_echo_chunk_retransmission = 8 maximum_number_of_input_sctp_streams = 32 maximum_number_of_instance_sapi = 2 maximum_number_of_ip_address_per_instance = 2 maximum_number_of_output_sctp_streams = 5 maximum_number_of_packets_sent_when_transmitting_new_data_chunks = 4 maximum_number_of_retransmission_per_association = 10 maximum_number_of_retransmission_per_path = 5 maximum_number_of_sctp_responses_waiting_for_acknowledge = 5 maximum_number_of_streams_per_association = 4 number_of_network_interface_card = 2 ``` **Parameters (json)** ``` { "advanced_parameters" : { "allow_wildcard_in_service_change" : true, "behavior" : { "compact_h248_descriptor_headers" : false, "loose_h248_message_decoding" : false, "no_only_ephemeral" : false, "no_remote_response" : false, "no_sctp_send_acknowledge" : false, "no_warm_service_change" : false, "null_terminating_h248_message" : false, "relay_unknown_h248_parameters" : false, "send_transaction_pending_automatically" : false, "send_transaction_response_acks" : false, "send_transaction_response_acks_immediately" : true, "transparent_sdp" : true }, "default_megaco_version" : 2, "ephemeral_termination_identifier_maximum_value" : 4294967295, "ephemeral_termination_identifier_root" : "IP/", "maximum_number_of_dns_pending_requests" : 5, "maximum_number_of_ephemeral_terminations" : 2048, "maximum_number_of_retransmissions" : 11, "maximum_number_of_tdm_terminations" : 2048, "profile" : { "profile_enabled" : false, "profile_name" : "", "profile_version" : "" }, "serialize_null_context_commands" : false, "switch_to_passthrough_on_tdm_ec_off" : true }, "enabled" : true, "naps" : [ ], "timers" : { "default_sent_transaction_timer" : "500 milliseconds", "dialing_duration_timer" : "5 seconds", "dialing_long_timer" : "15 seconds", "dialing_short_timer" : "5 seconds", "dialing_start_timer" : "30 seconds", "inactivity_timer" : "30 seconds", "local_response_timer" : "10 seconds", "maximum_sent_transaction_timer" : "4 seconds", "provisional_reply_transaction_timer" : "6 seconds", "restart_timer_value_to_retry_controller_association" : "30 seconds", "saved_replied_transaction_timer" : "30 seconds" }, "transport_protocol" : { "ip_interface" : "", "ip_tos_value" : 0, "local_ip_address" : "@[address_number]", "local_port_to_receive_for_text_encoding" : 2944, "public_ip_address" : "@[address_number]", "sctp_parameters" : { "checksum_type" : "AUTODETECT", "maximum_number_of_association_per_instance" : 5, "maximum_number_of_init_cookie_echo_chunk_retransmission" : 8, "maximum_number_of_input_sctp_streams" : 32, "maximum_number_of_instance_sapi" : 2, "maximum_number_of_ip_address_per_instance" : 2, "maximum_number_of_output_sctp_streams" : 5, "maximum_number_of_packets_sent_when_transmitting_new_data_chunks" : 4, "maximum_number_of_retransmission_per_association" : 10, "maximum_number_of_retransmission_per_path" : 5, "maximum_number_of_sctp_responses_waiting_for_acknowledge" : 5, "maximum_number_of_streams_per_association" : 4, "number_of_network_interface_card" : 2 }, "transport_protocol_type" : "UDP", "use_ip_interface" : false } } ``` --- # Agent Instructions This documentation is published with GitBook. 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