https://www.ipcomms.net/blog/ Guides, tutorials and industry news on SIP trunking, Asterisk, FreePBX, softphones and business VoIP from IPComms. en-us Sat, 05 Sep 2026 12:00:00 +0000 https://www.ipcomms.net/blog/lumen-sip-trunking-alternative/https://www.ipcomms.net/blog/lumen-sip-trunking-alternative/Sat, 05 Sep 2026 12:00:00 +0000Lumen stopped selling SIP trunking and Voice Complete on Aug 1, 2026. What changes at contract end, a realistic timeline, and a 7-step plan to move without replacing your PBX. https://www.ipcomms.net/blog/free-sip-trunk-testing/https://www.ipcomms.net/blog/free-sip-trunk-testing/Wed, 03 Dec 2025 12:00:00 +0000Get a free test trunk with a DID. Verify your Asterisk or FreePBX configuration with real calls before going live. https://www.ipcomms.net/blog/free-softphone-download/https://www.ipcomms.net/blog/free-softphone-download/Tue, 08 Jul 2025 12:00:00 +0000Zoiper, Linphone, MicroSIP, Groundwire, Sipnetic and five more tested. Best pick per platform, encryption and push compared, plus setup with any SIP trunk. https://www.ipcomms.net/blog/voip-911-e911-guide/https://www.ipcomms.net/blog/voip-911-e911-guide/Sat, 19 Jul 2025 12:00:00 +0000Understand E911 requirements for VoIP. Kari's Law, RAY BAUM's Act, and how to configure emergency calling. https://www.ipcomms.net/blog/best-sip-softphone-windows/https://www.ipcomms.net/blog/best-sip-softphone-windows/Sun, 14 Sep 2025 12:00:00 +0000Top Windows softphone apps compared. MicroSIP, Zoiper, 3CXPhone, and Linphone features and setup. https://www.ipcomms.net/blog/sip-softphone-android/https://www.ipcomms.net/blog/sip-softphone-android/Fri, 03 Oct 2025 12:00:00 +0000Top Android softphone apps compared. Zoiper, Linphone, Groundwire, and Sipnetic features and setup guides. https://www.ipcomms.net/blog/best-sip-trunk-providers/https://www.ipcomms.net/blog/best-sip-trunk-providers/Mon, 09 Feb 2026 12:00:00 +0000IPComms, Twilio, Telnyx, Bandwidth, Flowroute, VoIP.ms, SIP.US, ClearlyIP, Vonage and Nextiva compared on rates, channel fees, contracts, support and PBX fit. https://www.ipcomms.net/blog/sip-trunking-pricing-guide/https://www.ipcomms.net/blog/sip-trunking-pricing-guide/Mon, 09 Feb 2026 12:00:00 +0000Complete SIP trunking pricing guide. Compare per-channel vs per-minute pricing, hidden fees, and costs from top providers. https://www.ipcomms.net/blog/sip-trunk-failover/https://www.ipcomms.net/blog/sip-trunk-failover/Thu, 15 Jan 2026 12:00:00 +0000Provider-level, PBX-level, and network-level failover strategies. Asterisk and FreePBX failover config examples. https://www.ipcomms.net/blog/sip-trunk-capacity-planning/https://www.ipcomms.net/blog/sip-trunk-capacity-planning/Sat, 17 Jan 2026 12:00:00 +0000Erlang B formulas simplified. Bandwidth per codec, QoS settings, and sizing guides for any business. https://www.ipcomms.net/blog/free-did-numbers/https://www.ipcomms.net/blog/free-did-numbers/Thu, 22 May 2025 12:00:00 +0000Get free DID phone numbers for testing your PBX. Trial accounts, temporary numbers, and SIP testing resources. https://www.ipcomms.net/blog/asterisk-call-queues/https://www.ipcomms.net/blog/asterisk-call-queues/Mon, 05 May 2025 12:00:00 +0000Complete Asterisk queues.conf reference covering periodic-announce, announce-holdtime, and ring strategies. https://www.ipcomms.net/blog/sip-trunking-call-centers/https://www.ipcomms.net/blog/sip-trunking-call-centers/Mon, 09 Feb 2026 12:00:00 +0000Complete guide to SIP trunking for call centers. Capacity planning, PBX integration, cost savings vs PRI, and STIR/SHAKEN compliance. https://www.ipcomms.net/blog/sipnetic-softphone-guide/https://www.ipcomms.net/blog/sipnetic-softphone-guide/Tue, 19 Aug 2025 12:00:00 +0000Complete setup guide for Sipnetic on Android. Push notifications, codec settings, and battery optimization. https://www.ipcomms.net/blog/asterisk-dialplan-tutorial/https://www.ipcomms.net/blog/asterisk-dialplan-tutorial/Wed, 18 Feb 2026 12:00:00 +0000Complete Asterisk dialplan tutorial covering extensions.conf basics, pattern matching, variables, functions, and advanced call routing. https://www.ipcomms.net/blog/freepbx-install-guide/https://www.ipcomms.net/blog/freepbx-install-guide/Wed, 18 Feb 2026 12:00:00 +0000Step-by-step guide to installing FreePBX 17 with Asterisk on Debian 12 Bookworm. Complete setup from dependencies to SIP trunk configuration. https://www.ipcomms.net/blog/freepbx-outbound-routes/https://www.ipcomms.net/blog/freepbx-outbound-routes/Wed, 18 Feb 2026 12:00:00 +0000Configure FreePBX outbound routes and dial patterns for SIP trunking. Covers US dialing, international calls, and emergency routing. https://www.ipcomms.net/blog/toll-free-sip-trunking/https://www.ipcomms.net/blog/toll-free-sip-trunking/Mon, 09 Feb 2026 12:00:00 +0000Complete guide to toll-free SIP trunking. How 800 numbers work with SIP, vanity numbers, pricing, and porting. https://www.ipcomms.net/blog/asterisk-pjsip-trunk-setup/https://www.ipcomms.net/blog/asterisk-pjsip-trunk-setup/Wed, 15 Oct 2025 12:00:00 +0000Step-by-step guide to configuring a PJSIP SIP trunk in Asterisk 18+. Includes IP authentication, TLS/SRTP encryption, and dialplan examples. https://www.ipcomms.net/blog/pbx-security-guide/https://www.ipcomms.net/blog/pbx-security-guide/Tue, 08 Apr 2025 12:00:00 +0000Essential security practices for VoIP PBX systems. Prevent toll fraud, secure SIP, and protect your business. https://www.ipcomms.net/blog/asterisk-firewall-sip-ports/https://www.ipcomms.net/blog/asterisk-firewall-sip-ports/Wed, 18 Feb 2026 12:00:00 +0000Complete guide to SIP ports, firewall rules, and NAT configuration for Asterisk PBX. Configure iptables, UFW, and cloud security groups. https://www.ipcomms.net/blog/asterisk-pjsip-configuration/https://www.ipcomms.net/blog/asterisk-pjsip-configuration/Wed, 19 Nov 2025 12:00:00 +0000Asterisk PJSIP guide covering transports, endpoints, AORs, auth, reload commands and troubleshooting. https://www.ipcomms.net/blog/sip-trunking-vs-pri/https://www.ipcomms.net/blog/sip-trunking-vs-pri/Fri, 27 Mar 2026 12:00:00 +0000Compare cost, reliability, scalability, and features. Why most businesses save 80%+ by switching from PRI to SIP. https://www.ipcomms.net/blog/sip-tls-srtp-guide/https://www.ipcomms.net/blog/sip-tls-srtp-guide/Thu, 19 Feb 2026 12:00:00 +0000Everything about SIP TLS and SRTP encryption. HIPAA, CPNI, PCI-DSS compliance plus step-by-step Asterisk PJSIP configuration. https://www.ipcomms.net/blog/freepbx-troubleshooting-guide/https://www.ipcomms.net/blog/freepbx-troubleshooting-guide/Wed, 11 Feb 2026 12:00:00 +0000Fix FreePBX registration failures and one-way audio with step-by-step NAT, firewall, SIP and RTP solutions. https://www.ipcomms.net/blog/vanity-toll-free-numbers/https://www.ipcomms.net/blog/vanity-toll-free-numbers/Fri, 09 Jan 2026 12:00:00 +0000Get a memorable toll-free number for your business. Prefixes explained, availability tips, and pricing. https://www.ipcomms.net/blog/asterisk-ivr-auto-attendant/https://www.ipcomms.net/blog/asterisk-ivr-auto-attendant/Wed, 21 Jan 2026 12:00:00 +0000Multi-level menu systems, business hours routing, DTMF handling, and dial-by-name directory setup. https://www.ipcomms.net/blog/sip-trunking-benefits/https://www.ipcomms.net/blog/sip-trunking-benefits/Wed, 21 Jan 2026 12:00:00 +0000Why businesses switch to SIP trunking. Cost savings, scalability, disaster recovery, and more. https://www.ipcomms.net/blog/asterisk-voicemail-setup/https://www.ipcomms.net/blog/asterisk-voicemail-setup/Mon, 19 Jan 2026 12:00:00 +0000Configure voicemail.conf, voicemail-to-email, MWI indicators, and inbound call flows with SIP trunks. https://www.ipcomms.net/blog/3cx-sip-trunk-setup/https://www.ipcomms.net/blog/3cx-sip-trunk-setup/Mon, 12 Jan 2026 12:00:00 +0000Complete 3CX trunk configuration guide. Generic SIP trunk setup, outbound rules, and caller ID configuration. https://www.ipcomms.net/blog/freepbx-sip-trunk-setup/https://www.ipcomms.net/blog/freepbx-sip-trunk-setup/Thu, 08 Jan 2026 12:00:00 +0000Step-by-step FreePBX trunk configuration. PJSIP settings, inbound/outbound routes, and troubleshooting. https://www.ipcomms.net/blog/free-softphones-sip/https://www.ipcomms.net/blog/free-softphones-sip/Sat, 03 Jan 2026 12:00:00 +0000Top free softphone apps for desktop and mobile. Linphone, MicroSIP, Zoiper compared with setup guides. https://www.ipcomms.net/blog/asterisk-security-hardening/https://www.ipcomms.net/blog/asterisk-security-hardening/Sat, 20 Dec 2025 12:00:00 +0000Prevent toll fraud and brute force attacks. Firewall rules, Fail2Ban, TLS/SRTP, and context security for Asterisk. https://www.ipcomms.net/blog/what-is-asterisk/https://www.ipcomms.net/blog/what-is-asterisk/Fri, 05 Dec 2025 12:00:00 +0000Learn about Asterisk PBX: history, features, and how it compares to FreePBX. Getting started guide included. https://www.ipcomms.net/blog/toll-free-porting-guide/https://www.ipcomms.net/blog/toll-free-porting-guide/Thu, 27 Nov 2025 12:00:00 +0000How toll-free porting differs from local numbers. RespOrg transfers, timelines, and SIP trunk configuration. https://www.ipcomms.net/blog/voip-phone-buying-guide/https://www.ipcomms.net/blog/voip-phone-buying-guide/Sat, 22 Nov 2025 12:00:00 +0000Compare Yealink, Polycom, Cisco, and Grandstream. Features, pricing, and recommendations by use case. https://www.ipcomms.net/blog/local-phone-numbers-asterisk/https://www.ipcomms.net/blog/local-phone-numbers-asterisk/Tue, 18 Nov 2025 12:00:00 +0000How to purchase local DIDs, configure inbound routing, and manage multiple numbers on a single SIP trunk. https://www.ipcomms.net/blog/port-phone-number-sip-trunk/https://www.ipcomms.net/blog/port-phone-number-sip-trunk/Wed, 05 Nov 2025 12:00:00 +0000Keep your existing number when switching to SIP. LOAs, timelines, common rejections, and how to avoid downtime. https://www.ipcomms.net/blog/best-sip-trunk-provider-asterisk/https://www.ipcomms.net/blog/best-sip-trunk-provider-asterisk/Tue, 28 Oct 2025 12:00:00 +0000Compare top SIP trunk providers on pricing, reliability, codec support, and Asterisk compatibility. Side-by-side feature comparison. https://www.ipcomms.net/blog/free-porting-bulk-numbers/https://www.ipcomms.net/blog/free-porting-bulk-numbers/Wed, 15 Oct 2025 12:00:00 +0000Porting 100+ numbers? We waive all porting fees. Dedicated project manager, zero downtime migration. https://www.ipcomms.net/blog/fusionpbx-setup-guide/https://www.ipcomms.net/blog/fusionpbx-setup-guide/Tue, 14 Oct 2025 12:00:00 +0000Configure SIP trunks in FusionPBX/FreeSWITCH. Gateway setup, inbound/outbound routes, and dialplan examples. https://www.ipcomms.net/blog/one-way-audio-fix/https://www.ipcomms.net/blog/one-way-audio-fix/Wed, 03 Sep 2025 12:00:00 +0000Fix one-way audio issues in VoIP. NAT traversal, firewall rules, SIP ALG, and STUN configuration explained. https://www.ipcomms.net/blog/unlimited-sip-trunk/https://www.ipcomms.net/blog/unlimited-sip-trunk/Thu, 28 Aug 2025 12:00:00 +0000Comparing unlimited vs metered SIP trunking. When unlimited makes sense and hidden costs to watch for. https://www.ipcomms.net/blog/sip-trunk-security-best-practices/https://www.ipcomms.net/blog/sip-trunk-security-best-practices/Thu, 14 Aug 2025 12:00:00 +0000Essential SIP trunk security best practices including encryption, access control, monitoring, and fraud prevention. https://www.ipcomms.net/blog/sip-trunking-small-business/https://www.ipcomms.net/blog/sip-trunking-small-business/Fri, 11 Jul 2025 12:00:00 +0000Why small businesses are switching to SIP trunking. Compare costs with traditional phone lines and explore key features. https://www.ipcomms.net/blog/voicemail-asterisk-setup/https://www.ipcomms.net/blog/voicemail-asterisk-setup/Sun, 22 Jun 2025 12:00:00 +0000Complete guide to setting up voicemail on Asterisk PBX. Configure voicemail.conf, email notifications, and customize greetings. https://www.ipcomms.net/blog/zoiper-softphone-guide/https://www.ipcomms.net/blog/zoiper-softphone-guide/Sun, 15 Jun 2025 12:00:00 +0000Configure Zoiper softphone on Windows, Mac, iOS, and Android. SIP settings, codecs, and troubleshooting. https://www.ipcomms.net/blog/asterisk-debian-13-install/https://www.ipcomms.net/blog/asterisk-debian-13-install/Wed, 12 Mar 2025 12:00:00 +0000Step-by-step guide to compile and install Asterisk 21 on Debian 13 Trixie with PJSIP and optimized settings.