--- title: Configuring Arkan Integrated Solutions SIP Trunk on a PBX System description: To successfully configure a SIP trunk on your PBX system, allowing it to send and receive calls through Arkan Solutions' proxy servers, the following requirements and information are essential: --- [Skip to content](https://help.arkan.international/how-to-configure-arkan-sip-trunk#main-content) English Show submenu for translations [Create Support Ticket](https://help.arkan.international/kb-tickets/new?hsLang=en) [Customer portal](https://help.arkan.international/support-portal?hsLang=en) [![Arkan-Logo-Transperat.png](https://help.arkan.international/hs-fs/hubfs/Arkan_april_2024/images/Arkan-Logo-Transperat.png?width=201&height=101&name=Arkan-Logo-Transperat.png)](https://www.arkan.solutions/en/?hsLang=en) - [Managed Services](https://www.arkan.solutions/en/managed-services) - Products Show submenu for Products - [Arkan Cloud Connect](https://www.arkan.solutions/en/arkan_cloud_connect) Show submenu for Arkan Cloud Connect - [Webex Cloud Connect](https://arkan.solutions/en/webex-cloud-connect) - [Arkan API Connect](https://www.arkan.solutions/en/api-voice-cloud-connect) - [Arkan Voice Products](https://www.arkan.solutions/en/arkan-voice-products) - [Security & Compliance](https://www.arkan.solutions/en/security_and_compliance) - Support & Resources Show submenu for Support & Resources - Support Show submenu for Support - [Knowledge Base](https://help.arkan.international/) - [Submit a Ticket](https://help.arkan.international/kb-tickets/new) - [Service Status](https://www.arkan.solutions/en/service-status) - Resources Show submenu for Resources - [Blog](https://blog.arkan.international/en) - [News](https://www.arkan.solutions/en/news) - About Show submenu for About - [About Us](https://www.arkan.solutions/en/about-arkan) - [Why Arkan](https://www.arkan.solutions/en/why-arkan) - [Our Clients](https://www.arkan.solutions/en/clients) Open main navigation Close main navigation - [Managed Services](https://www.arkan.solutions/en/managed-services) - Products Show submenu for Products - [Arkan Cloud Connect](https://www.arkan.solutions/en/arkan_cloud_connect) Show submenu for Arkan Cloud Connect - [Webex Cloud Connect](https://arkan.solutions/en/webex-cloud-connect) - [Arkan API Connect](https://www.arkan.solutions/en/api-voice-cloud-connect) - [Arkan Voice Products](https://www.arkan.solutions/en/arkan-voice-products) - [Security & Compliance](https://www.arkan.solutions/en/security_and_compliance) - Support & Resources Show submenu for Support & Resources - Support Show submenu for Support - [Knowledge Base](https://help.arkan.international/) - [Submit a Ticket](https://help.arkan.international/kb-tickets/new) - [Service Status](https://www.arkan.solutions/en/service-status) - Resources Show submenu for Resources - [Blog](https://blog.arkan.international/en) - [News](https://www.arkan.solutions/en/news) - About Show submenu for About - [About Us](https://www.arkan.solutions/en/about-arkan) - [Why Arkan](https://www.arkan.solutions/en/why-arkan) - [Our Clients](https://www.arkan.solutions/en/clients) - English Show submenu for translations - [Create Support Ticket](https://help.arkan.international/kb-tickets/new) - [Customer portal](https://help.arkan.international/support-portal) - [Talk to an Expert](https://www.arkan.solutions/en/contact-us) [Talk to an Expert](https://www.arkan.solutions/en/contact-us?hsLang=en) Hello. 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[SIP Service Configuration](https://help.arkan.international/arkan-cloud-services?hsLang=en#sip-service-configuration) # Configuring Arkan Integrated Solutions SIP Trunk on a PBX System ## To successfully configure a SIP trunk on your PBX system, allowing it to send and receive calls through Arkan Solutions' proxy servers, the following requirements and information are essential: ### 📌 Prerequisites Before you begin: - Ensure you have an active **Arkan Solutions SIP service plan**. - At least one active **DID (Direct Inward Dialing)** number tied to your subscription. - Firewall/NAT rules allowing SIP **signaling** and **media** traffic to/from Arkan proxy and media IPs. **81.208.160.76** **81.208.162.84** **144.24.220.42** **84.8.105.58** **84.8.96.242** **84.8.123.48 84.235.250.21 193.123.88.110 193.123.69.207** - For **Saudi Arabia** services, the customer's IP must be within Saudi Arabia. - For **UAE** services, the customer's IP must be within the UAE. --- #### 📶 SIP Signaling Settings ### **Arkan Proxy Servers** | Proxy Server | IP / FQDN | Port | Protocol | TLS Notes | | --- | --- | --- | --- | --- | | Primary | proxy001.arkanet.net / proxy001ruh.arkanet.net / proxy001dxb.arkanet.net | **5060** | TCP/UDP | Standard SIP (unencrypted) | | Primary | proxy001.arkanet.net / proxy001ruh.arkanet.net / proxy001dxb.arkanet.net | **5061** | **TLS** | **Use TLS v1.2 only** (provider requires TLS 1.2 for signaling encryption) | > **TLS Version Requirement:** Only **TLS 1.2** is permitted for encrypted SIP signaling (SIP over TLS). > Make sure your PBX/SBC supports TLS 1.2 on port **5061** (custom port is allowed if requested) and that certificate validation is properly configured if applicable. --- #### 🎧 Media (Audio) Configuration Arkan uses the *same media server IPs* listed under signaling or will negotiate via SDP in the call — that means media (RTP/SRTP) will be determined dynamically during the SIP session. The PBX/SBC should support encrypted media offers. However, enforcing non encrypted media on the trunk must be requested from Arkan team subject to regulations of the country of the service purchased. ### **Media Transport Modes** You should configure your PBX/SBC to accept and offer **SRTP** options to ensure interoperability regardless of the endpoint’s media encryption support: | Media Mode | Description | Recommended Setting | | --- | --- | --- | | **Encrypted Media (SRTP)** | Secure Real-Time Transport Protocol must be used if both sides support it. | **Offer SRTP first (Preferred)** | | **Unencrypted Media (RTP)** | Fallback to legacy RTP if SRTP negotiation fails. | **Accept RTP** | **Recommended Configuration:** - Accept both **SRTP** offers on incoming and outgoing calls. - Prefer **SRTP** when available (ensure your PBX/SBC supports this). - Do **not** reject unencrypted RTP unless your environment *requires* strict media encryption. > TB: Many PBX/SBC platforms call this setting **“SRTP optional/allow SRTP or RTP”** — configure that mode rather than “SRTP only” to allow fallback. --- #### 📡 Media Port Ranges You must allow the media (RTP/SRTP) port range on your firewall to/from Arkan networks. Typical ranges used by SIP providers include **UDP ports 10000–60000** (exact range depends on your PBX). Ensure these are open and accessible for two-way audio. --- #### 🎙️ Codec Support & Priorities To maximize interoperability and call quality, set your codec preferences as follows: ### **Preferred Codec Order** 1. **G.711 A-law / µ-law** (highest priority) - Best compatibility and PSTN interoperability. 2. **Opus** - Wideband codec (if supported by both sides). 3. **G.729** - Low bandwidth (optional based on licensing). 4. **G.722** - Wideband codec (good quality). ### **Supported Codecs** - **Preferred / Recommended:** - *G.711 A-law*, *G.711 µ-law* - **Also Supported:** - *Opus*, *G.729*, *G.722* > Ensure your trunk configuration uses G.711 as the **primary** codec, with the others enabled below it in priority. --- #### 🔐 Encryption Summary - **SIP Signaling:** TLS over port **5061** using **TLS 1.2** only. - **Media Encryption:** SRTP preferred; allow RTP fallback for compatibility. - **Codec Priority:** - Highest preference: **G.711 a/µ-law** - Supported: **Opus, G.729, G.722**. --- #### ✅ Example SIP Trunk Configuration Checklist ✔ Transport Protocol: **TLS 1.2** on port **5061** ✔ SIP Proxy IPs Whitelisted ✔ Media Ports (UDP 10000–60000) Allowed ✔ Media Mode: **SRTP (preferred) + RTP allowed** ✔ Codec Order Set (G.711 → Opus → G.729 → G.722) ✔ NAT/Firewall Rules for both SIP & RTP/SRTP [![Arkan logo.small for online view](https://help.arkan.international/hs-fs/hubfs/Arkan%20logo.small%20for%20online%20view.png?width=65&height=76&name=Arkan%20logo.small%20for%20online%20view.png "Arkan logo.small for online view")](https://www.arkan.solutions?hsLang=en) arkan.email Help Center Copyright © 2026, Arkan integrated 1 AS Arkan Solutions Cloud Voice Expert · Online EN ✕ Ticket Human ☼ 📞 Welcome to Arkan Solutions Help us serve you better — takes 20 seconds. 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