One tier and one allowed_numbers list governed both directions, with the same
list matched against dialled numbers going out and caller IDs coming in.
Those are different sets, so "dial anyone but only accept calls from a short
list" — and its reverse — were not expressible at all.
pstn-permissions.conf now carries tier_out/allowed_out and tier_in/allowed_in.
The dialplan reads them in the four places that gate a call: the outbound
NANP pattern, the international leg, each ring-group member block, and
personal-DID inbound routing — plus the group-ring shell helper. Internal
extension-to-extension calling and ring groups remain ungated by either, as
before.
Existing installs are migrated in place by _pstn_migrate_permissions_split,
which copies the old single tier into both directions (reproducing the box's
current behaviour exactly), backs the file up first, and is idempotent. It
runs alongside the dialplan write rather than after a reload, since the new
dialplan reading un-migrated keys would fail closed and deny every call.
tier/allowed_numbers keep being written as a mirror of the outbound values so
that rolling back to a pre-split pstn-trunk.sh degrades to the old semantics
instead of breaking.
The dashboard's Extensions table gains Outbound/Can-dial and Inbound/Can-be-
called-by columns, each number field enabled only by its own tier, tier
columns sorting by permissiveness rather than alphabetically, and a save that
posts the whole permission record so an unchanged direction isn't reset.
Verified: the migration on a hand-written config (idempotent on rerun,
messaging and personal_did preserved); generated dialplan and group-ring
helper reading the split keys; and the group-ring helper resolving a real
three-extension case — out=full/in=restricted rings only for a whitelisted
caller, out=restricted/in=full rings for everyone, in=internal never rings —
plus the browser round-trip writing tier_out=full with tier_in=restricted.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NAddJGE1G6eGaPzmScG5Vh
Claude
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