M4 Development Update

API

• API: drop active calls — added REST drop_active_calls API to terminate active calls.
• API v2 authentication — added REST /api/v2/auth/token, /api/v2/auth/refresh, /api/v2/auth/logout, and /api/v2/auth/me with access and refresh tokens (Doorkeeper/JWT).
• CDR currency code fields — added VARCHAR(3) currency columns on CDR (user_currency, provider_currency, did_selling_currency, did_buying_currency); NULL when currency matches system currency to save space.

Major Enhancements

Webhooks and alerts

• Alert webhooks — POST to a configured URL when an alert activates or clears (id, name, type, object, cause, value, count, timestamp).

Kamailio and platform

• GeoIP-based RTPEngine routing — routes media through region-appropriate RTPEngine instances based on caller/callee GeoIP (Kamailio.cfg 1.8.87).

Connection points

• Always transcode on connection points — added Always transcode yes/no on M4 origination and termination point codec settings; when enabled, core passes always-transcode to RTPEngine.

Platform

• Demo auto-login — Admin_Auto_Login = 1 in environment.rb logs in admin automatically on the demo install.

Billing, tariffs, and rating

• Auto-Tariff import name-to-prefix mapping — Prefix/Code import can use a separate mapping sheet (name column → prefix column) with configurable header skip; added “Pre-Made 3U Telecom” template.

Additional Improvements

Kamailio and platform

• Kamailio forced digest auth for unknown IPs — new kamailio_force_auth_for_unknown_ips system.conf setting (default 0); when enabled, Kamailio challenges requests from non-static-IP origination points with digest auth instead of forwarding to core for IP auth.

Platform

• Exception error messages — clearer exception error text.
• Gemfile gem version lock — pinned Ruby gem versions in the Gemfile.
• Generate Hash action log error — GUI Generate Hash no longer writes false Action Log API errors (“Incorrect hash”, “User was not found”) after hash generation.

CDR and exports

• CDR Export additional columns — export templates can include codec, PAI/RPID, TP src/dst, routing attempt, MOS metrics, DID billing fields, media IPs, and related columns.

CDR and reporting

• Calls list query performance — answered-call filters on the Calls list load in seconds instead of minutes.
• Release Cause in Call List — Call List can show a sortable Release Cause (SIP release code) column when enabled in settings; new dc field in Elasticsearch.
• OP rejection HGC priority — when multiple origination points share an IP, CDR reports the OP that failed advanced authentication (whitelist/blacklist) with the correct HGC instead of a later prefix-mismatch on a different OP.

Platform and operations

• Blocked IPs database load — added DB indexes on unblock and first 10 characters of chain to reduce load when fail2ban blocks many IPs.
• Replication check debug output — DB replication failure alerts in gui_debug.log now include full SHOW SLAVE STATUS output (Slave_IO_State, Slave_IO_Running, Slave_SQL_Running, etc.).

Billing, subscriptions, and invoices

• Invoice subscriptions by billing period — new invoice_subscriptions_by_billing_period system.conf setting includes subscriptions on invoices by billing period instead of charge date when charges run late.
• Call-day currency exchange rates — billing script applies the exchange rate from the call date (not today), caches rates, and prioritizes Calls then Invoices.

DIDs and call flow

• DIDs page for simple users — simple users can view DIDs where they are assigned as Customer, including subscription fields when a subscription exists; column alignment tuned.

Destinations and routing

• Rate Notification Min.Time/Increment column — rate notification template export includes Min.Time/Increment.

Bug Fix Report

• Backup failure (iplocations timeout) — backups failed when iplocations could not reach one upstream host; added timeout so backup continues when a geo-lookup source is unreachable.
• Invoice generation with subscriptions only — invoices are generated for users who have active subscriptions but no calls in the billing period.
• Tariff rates list crash — fixed ArgumentError: argument out of range on Rates List when server date format is MM-DD-YYYY and Effective From dates match system date parsing.
• DID Inventory search crash — fixed undefined method 'id' for nil:NilClass on DID Inventory search in Chrome for affected client DBs.
• Automatic tariff import Prefix+CLI — import now groups by cli_group_hash_key so rows with the same prefix but different CLI values all import instead of only the first match.
• Automatic tariff import duplicate prefixes — fixed temp table doubling row count (duplicate prefixes) on large XLS imports without secondary data.
• PDF invoice encoding error — fixed Prawn::Errors::IncompatibleStringEncoding when resellers open generated PDF invoices.
• Move prefix CSV import — fixed “Invalid CSV headers or column separators” on Move Prefix between Destination Groups with CSV.
• DEBUG log PAI/src display — fixed misleading src before transformation in DEBUG logs when From and PAI differ (M4 Core 1.3.95).
• Manager 2FA settings — Manager edit lacked a 2FA enable option; 2FA Enabled on Manager edit and Send Notification on Manager Login under Settings > Security are now available.
• Rate notification email with slash in filename — email send failed when the job filename contained /; invalid filename characters are normalized before save (e.g. / replaced with -).
• API crash logging — API crashes did not produce crash logs; crash logging restored.
• Rerating GUI status stuck — rerating finished successfully but the GUI stayed at 99% FAILED when the MySQL connection dropped during the final status update.
• DID delete blocked when calls exist — M4 no longer allows deleting DIDs that have calls, preventing empty invoice line items.
• Charge Subscription on insufficient balance — “If balance insufficient – Charge Subscription” now charges subscriptions on negative balance as configured.
• Kamailio TP call limits enforcement — core no longer under-enforces CPS vs TP Kamailio limits; enable via kamailio_tp_call_limits_check in system.conf and per-TP tp_kamailio_limits in DB.
• Kamailio To tag on TP failure after ringing — when TP sends ringing/progress then a failure (e.g. Busy), Kamailio now forwards the provider’s To tag to the originator instead of substituting a new tag (unless disconnect-code rewriting is configured).
• Kamailio fails to start with TLS — Kamailio did not start when TLS was enabled.