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Agents you build on Wixzel Voice place and answer phone calls over a SIP trunk you bring, and Mobily SIP Trunk, in Saudi Arabia, is one that works with it. Mobily bills you for the trunk and the minutes at your own rates; the voice engine is billed per second of actual usage from your Wixzel Voice balance. This page covers what is different about Mobily. The steps that are the same for every carrier, and the troubleshooting list, are on SIP trunks.
Allowlist 187.126.120.231 for outbound calls, and send inbound calls to sip:187.126.120.231:5090. Every trunk returns both as platform_ip and origination_uri, so read them from GET /v1/sip-trunks rather than trusting this page to stay current.
No Mobily trunk has been tested end to end with Wixzel Voice yet. These settings come from Cisco’s 2020 interop note for Mobily SIP Trunk, so ask Mobily to confirm them for your link.

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How do I connect a Mobily SIP trunk to Wixzel Voice?

Mobily has no API for trunks or numbers, so there is no one-step connect in the console. Mobily also delivers the trunk over a private link to your site, so the platform cannot reach Mobily directly: an SBC or PBX of yours on that link relays the calls.
1

Order SIP Trunk from Mobily Business

Mobily sells SIP Trunk to businesses in Saudi Arabia through its sales team: call 901 from a Mobily Business line or email DigitalSalesB2B@mobily.com.sa. Your numbers come with the trunk or are ported to it.
2

Put an SBC with a public IP on the Mobily link

Mobily trusts your side of the link by IP, without SIP REGISTER. The SBC sits on that link and also has a public IP the platform can reach.
3

Trust the platform and route both ways

On the SBC, trust 187.126.120.231 and route inbound Mobily calls to the origination_uri your trunk returns. Calls from the platform go out to Mobily with numbers in the 966… form. Use G.711 A-law and RFC 2833 DTMF on the Mobily side.
4

Add the trunk in Wixzel Voice

Create the trunk with your SBC’s public IP as host, transport: "udp" and send_plus: false. Put “Mobily” in its name so the console shows the Mobily mark.

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What goes wrong on Mobily?

  • Mobily cuts calls, inbound and outbound, at one hour. A long call that drops at exactly 60 minutes is the carrier, not the agent.
  • Calls arriving from Mobily offer G.711 A-law and never G.729. An SBC that only allows G.729 toward Mobily fails every inbound call.
  • A re-INVITE that puts the call on hold (sendonly or inactive) can drop the call on Mobily. Have the SBC rewrite it to sendrecv.

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What if a Mobily call does not connect?

Work through When a call does not connect, and start with your SBC’s logs: they show whether the call reached the SBC from each side and which side cleared it.
  • SIP trunks: the allowlist, the inbound address and the troubleshooting list that apply to every carrier.
  • Quickstart: connect the trunk, register a number, create an agent and place a first call.
  • Mobily SIP trunk setup: the short version on the Wixzel Voice site, with what a minute costs on each voice engine.