Real ChatGPT answer · index seedV6Iee1rKyx8completeTelecom and utilities · VoIP and business phonesinformational

Can you recommend any open-source SIP servers that a technically inclined business owner can run on cheap hardware?

ChatGPTgpt-62 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
Can you recommend any open-source SIP servers that a technically inclined business owner can run on cheap hardware?
2 real searches · 1 real-search pass
best open source SIP servers Asterisk FreeSWITCH Kamailio OpenSIPS official documentation 2026Google ↗
OBSERVEDComparison
Asterisk official hardware requirements FreeSWITCH Kamailio OpenSIPS features licensingGoogle ↗
OBSERVEDComparison

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (2)
Short factOther / navigationalComparison100%ConsequenceReasonDefinitionInstructionYes / no

Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
best open source SIP servers Asterisk FreeSWITCH Kamailio OpenSIPS official documentation 2026 Google ↗
Asterisk official hardware requirements FreeSWITCH Kamailio OpenSIPS features licensing Google ↗
  1. FreeSWITCH · freeswitch.com
  2. FreePBX · freepbx.org
  3. Asterisk documentation · docs.asterisk.org
  4. FusionPBX (FreeSWITCH interface) · fusionpbx.com
  5. Kamailio documentation · kamailio.org
  6. OpenSIPS documentation · opensips.org

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
best open source SIP servers Asterisk FreeSWITCH Kamailio OpenSIPS official documentation 2026
OBSERVED
Google ↗
AI Mode ↗
—Comparison——1x
of 1
Asterisk official hardware requirements FreeSWITCH Kamailio OpenSIPS features licensing
OBSERVED
Google ↗
AI Mode ↗
—Comparison——1x
of 1