diff --git a/Cargo.lock b/Cargo.lock
index 5307a8e..f1b3428 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1200,10 +1200,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "rutster-signaling-sip"
-version = "0.0.0"
-
 [[package]]
 name = "rutster-spend"
 version = "0.0.0"
@@ -1238,6 +1234,10 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "rutster-trunk"
+version = "0.0.0"
+
 [[package]]
 name = "ryu"
 version = "1.0.23"
diff --git a/Cargo.toml b/Cargo.toml
index b98b5e6..1efc567 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ members = [
     "crates/rutster",
     "crates/rutster-call-model",
     "crates/rutster-media",
-    "crates/rutster-signaling-sip",
+    "crates/rutster-trunk",
     "crates/rutster-tap",
     "crates/rutster-tap-echo",
     "crates/rutster-spend",
@@ -16,8 +16,8 @@ members = [
 
 [workspace.package]
 license = "GPL-3.0-or-later"
-edition = "2021"
-repository = "https://github.com/anomalyco/rutster"
+edition = "2024"
+repository = "https://git.adlee.work/alee/rutster"
 
 # Pinned versions for all member crates. References are `foo.workspace = true`
 # in the member manifest. Keeps the dep tree unified (§2.1).
diff --git a/crates/rutster-signaling-sip/Cargo.toml b/crates/rutster-signaling-sip/Cargo.toml
deleted file mode 100644
index e123875..0000000
--- a/crates/rutster-signaling-sip/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-# crates/rutster-signaling-sip/Cargo.toml
-[package]
-name = "rutster-signaling-sip"
-version = "0.0.0"
-license.workspace = true
-edition.workspace = true
-repository.workspace = true
-description = "Rust-native trunk SIP — stub crate (filled in spearhead step 5)."
diff --git a/crates/rutster-signaling-sip/src/lib.rs b/crates/rutster-signaling-sip/src/lib.rs
deleted file mode 100644
index 2111346..0000000
--- a/crates/rutster-signaling-sip/src/lib.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-//! # rutster-signaling-sip
-//!
-//! **Status:** stub. Fills in at spearhead step 5 (PSTN trunk).
-//!
-//! This crate will hold the Rust-native trunk SIP stack: the SIP parser,
-//! transaction layer, dialog state, and the carrier trunk integration. See
-//! [ADR-0003](../../../docs/adr/0003-sip-rust-native-trunk.md) for the
-//! "own the parser from day one" thesis and [PORT_PLAN §1](../../../docs/PORT_PLAN.md)
-//! for the surface area (`res_pjsip_session`, `chan_sip`, `_sdp_rtp` rows).
-//!
-//! Slice 1's WebRTC-only ingress needs no SIP — this stub exists to lock the
-//! crate boundary without anticipating code (spec §2.2). It depends on
-//! nothing in the workspace in slice 1. Its future dependency direction is
-//! `rutster-signaling-sip` → `rutster-call-model` + `rutster-media` (once
-//! the SDP help lives here, moved out of `rutster-media`'s WebRTC-ICE-coupled
-//! SDP module — see §3.7 of the slice-1 spec for the split rationale).
-
-#[cfg(test)]
-mod tests {
-    /// Stub crates lock boundaries; the compile-test is the lock.
-    #[test]
-    fn crate_compiles() {}
-}
diff --git a/crates/rutster-spend/src/lib.rs b/crates/rutster-spend/src/lib.rs
index 2ea0d1c..2eaaf81 100644
--- a/crates/rutster-spend/src/lib.rs
+++ b/crates/rutster-spend/src/lib.rs
@@ -4,15 +4,17 @@
 //!
 //! In-boundary spend and abuse control is constitutive of the wedge
 //! ([ADR-0002](../../../docs/adr/0002-north-star-and-fused-core.md)): the
-//! runaway brain structurally cannot exceed spend or pacing because it
-//! doesn't hold the wire — the trunk termination + spend gate do, in one
-//! boundary. Pulling spend out into a service re-introduces the 3-vendor
-//! structural hole the fused vertical was chosen to eliminate.
+//! runaway brain structurally cannot exceed spend or pacing because it never
+//! holds the wire — rutster mediates both the provider call-control API and
+//! the brain tap, and the spend gate sits in that boundary
+//! ([ADR-0007](../../../docs/adr/0007-trunk-rented-transport.md)). Pulling
+//! spend out into a service re-introduces the 3-vendor structural hole the
+//! fused vertical was chosen to eliminate.
 //!
 //! This crate will hold: spend caps, pacing caps, deny-by-default routing,
-//! rate-limits, toll-fraud pattern detection — co-located with trunk
-//! termination in `rutster-signaling-sip` (step 5). Depends on nothing in
-//! the workspace in slice 1.
+//! rate-limits, toll-fraud pattern detection — co-located with call
+//! origination + the tap (the rented-transport ingress lives in
+//! `rutster-trunk`, step 5). Depends on nothing in the workspace in slice 1.
 
 #[cfg(test)]
 mod tests {
diff --git a/crates/rutster-trunk/Cargo.toml b/crates/rutster-trunk/Cargo.toml
new file mode 100644
index 0000000..bd92d0d
--- /dev/null
+++ b/crates/rutster-trunk/Cargo.toml
@@ -0,0 +1,8 @@
+# crates/rutster-trunk/Cargo.toml
+[package]
+name = "rutster-trunk"
+version = "0.0.0"
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+description = "Rented carrier transport — CPaaS media-leg ingress / out-of-tree SBC; no first-party SIP (filled in step 5, ADR-0007)."
diff --git a/crates/rutster-trunk/src/lib.rs b/crates/rutster-trunk/src/lib.rs
new file mode 100644
index 0000000..96aee3b
--- /dev/null
+++ b/crates/rutster-trunk/src/lib.rs
@@ -0,0 +1,24 @@
+//! # rutster-trunk
+//!
+//! **Status:** stub. Fills in at spearhead step 5 (a real phone number via rented transport).
+//!
+//! Carrier / PSTN reach for rutster — **rented transport, no first-party SIP**
+//! ([ADR-0007](../../../docs/adr/0007-trunk-rented-transport.md)). This crate will hold the
+//! rented-transport ingress: the **CPaaS media-leg adapter** — a WebSocket server accepting a
+//! provider raw-media fork (Twilio Media Streams / Telnyx) plus the provider call-control
+//! client — and later the glue for an **out-of-tree SBC** when PSTN media must stay on-prem.
+//! It owns **no SIP stack**: SIP lives outside the trust boundary, in the rented transport
+//! (green zone — [ADR-0008](../../../docs/adr/0008-fob-and-green-zone.md)).
+//!
+//! Slice 1's WebRTC-only ingress needs none of this — this stub exists to lock the crate
+//! boundary without anticipating code (spec §2.2). Its future dependency direction is
+//! `rutster-trunk` → `rutster-call-model` + `rutster-media`: PSTN audio is resampled to the
+//! canonical tap format and handed to the media plane as a media-leg ingress, parallel to
+//! WebRTC.
+
+#[cfg(test)]
+mod tests {
+    /// Stub crates lock boundaries; the compile-test is the lock.
+    #[test]
+    fn crate_compiles() {}
+}