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Documentation Index

Fetch the complete documentation index at: https://docs.getsmartalex.com/llms.txt

Use this file to discover all available pages before exploring further.

Audience: Yeastar admin. Time: 10 to 15 minutes. Models: P-Series (PBX) and S-Series (VoIP PBX appliance).

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Prerequisites

  • Yeastar admin credentials
  • A DID routed to this Yeastar
  • PBX SIP Domain (the Yeastar’s FQDN or public IP)
  • List of extensions

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Step 1: create the trunk in SmartAlex

Phone Numbers, then Connect Your Carrier, then SIP Trunk, then pick Yeastar. Fill the form. The Yeastar defaults are pre-set: UDP transport, digest authentication, G.711 codecs. Save and copy the connection details.

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Step 2: add the trunk in Yeastar

1

Open VoIP settings

Yeastar admin console, then Settings, then PBX, then Trunks, then Add.
2

Choose trunk type

Select Register Trunk (credentials-based, matches digest auth).
3

Fill connection

  • Provider Name: SmartAlex
  • Hostname / IP: sip.voice.getsmartalex.com
  • Port: 5060
  • Transport: UDP
  • Username: (from SmartAlex)
  • Password: (from SmartAlex)
  • Authentication Name: same as username
  • From User: blank
4

Codecs

Enable PCMU and PCMA. Prioritise PCMU first unless a specific region requires otherwise.
5

Save and verify

Yeastar should show the trunk Registered within 30 seconds.

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Step 3: inbound routing

Settings, then PBX, then Call Control, then Inbound Routes. Add a route that routes the DID to this trunk (outbound forward). Alternatively, if SmartAlex provisioned a new DID, you don’t need an inbound route on Yeastar.

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Step 4: add extensions in SmartAlex

Settings, then PBX. Add each extension with its number, name, owner, department, and aliases. Agent Studio, then Telephony tab, then pick the trunk.

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Step 6: test

Call the DID. AI answers. Ask for a transfer. Yeastar extension rings.

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Yeastar-specific notes

  • P-Series firmware: v84.x and later work without issues.
  • S-Series firmware: v30.x and later work. Very old firmware may not support re-INVITE correctly. Upgrade if you see media issues.
  • NAT handling: Yeastar has a built-in STUN option. Enable under Network settings if the unit is behind NAT.
  • Codec priority: Yeastar defaults can be aggressive on G.729. Force G.711 first.

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Next steps

Troubleshooting

Error reference.

Testing

Validation procedure.