diff --git a/classify/types.go b/classify/types.go
index 65e15f3..c1ce56c 100644
--- a/classify/types.go
+++ b/classify/types.go
@@ -54,21 +54,19 @@ const (
 	// --- Web extension (PROTO-07) ---
 	ClassQUIC TrafficClass = "QUIC"
 
-	// --- Infrastructure extension (PROTO-08, D-01: no ClassFreqConfigs until Phase 11) ---
+	// --- Infrastructure extension (PROTO-08) ---
 	ClassLDAP     TrafficClass = "LDAP"
 	ClassKerberos TrafficClass = "Kerberos"
 	ClassSyslog   TrafficClass = "Syslog"
 )
 
 // AllClasses returns all known traffic classes in display order.
-// Excludes ClassLDAP, ClassKerberos, and ClassSyslog — these have constants and rules
-// but no ClassFreqConfigs entries until Phase 11, so they must not appear here
-// (TestAllClassesHaveConfig in synth/config_test.go enforces the invariant).
 func AllClasses() []TrafficClass {
 	return []TrafficClass{
 		// Infrastructure
 		ClassICMP, ClassDNS, ClassNTP, ClassDHCP,
 		ClassMDNS, ClassSSDP, ClassSNMP,
+		ClassLDAP, ClassKerberos, ClassSyslog,
 		// Web
 		ClassHTTPS, ClassHTTP, ClassQUIC,
 		// Mail
diff --git a/synth/config.go b/synth/config.go
index 58ea9b8..731e06d 100644
--- a/synth/config.go
+++ b/synth/config.go
@@ -164,6 +164,58 @@ var ClassFreqConfigs = map[classify.TrafficClass]FreqConfig{
 		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 214.0, SampleRate),
 		Pan:          0.2,
 		Group:        "Mail",
+	},
+		// --- Infrastructure additions (Triangle, 93-118 Hz) ---
+	classify.ClassMDNS: {
+		BaseHz:       93.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 93.0, SampleRate),
+		Pan:          0.3,
+		Group:        "Infrastructure",
+	},
+	classify.ClassSSDP: {
+		BaseHz:       105.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 105.0, SampleRate),
+		Pan:          -0.2,
+		Group:        "Infrastructure",
+	},
+	classify.ClassSNMP: {
+		BaseHz:       118.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 118.0, SampleRate),
+		Pan:          0.2,
+		Group:        "Infrastructure",
+	},
+	// --- Web addition (Sawtooth, 190 Hz) ---
+	classify.ClassQUIC: {
+		BaseHz:       190.0,
+		WaveformType: WaveformSawtooth,
+		Harmonics:    WaveformPresetHarmonics(WaveformSawtooth, 190.0, SampleRate),
+		Pan:          -0.2,
+		Group:        "Web",
+	},
+	// --- Mail additions (Triangle, 241-305 Hz) ---
+	classify.ClassIMAP: {
+		BaseHz:       241.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 241.0, SampleRate),
+		Pan:          0.3,
+		Group:        "Mail",
+	},
+	classify.ClassPOP3: {
+		BaseHz:       271.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 271.0, SampleRate),
+		Pan:          0.4,
+		Group:        "Mail",
+	},
+	classify.ClassSMTPSub: {
+		BaseHz:       305.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 305.0, SampleRate),
+		Pan:          0.5,
+		Group:        "Mail",
 	},
 	// --- Remote Access (Square, 343 Hz) ---
 	classify.ClassSSH: {
@@ -173,6 +225,50 @@ var ClassFreqConfigs = map[classify.TrafficClass]FreqConfig{
 		Pan:          -0.7,
 		Group:        "Remote Access",
 	},
+	// --- Remote Access additions (Square, 385-485 Hz) ---
+	classify.ClassRDP: {
+		BaseHz:       385.0,
+		WaveformType: WaveformSquare,
+		Harmonics:    WaveformPresetHarmonics(WaveformSquare, 385.0, SampleRate),
+		Pan:          -0.6,
+		Group:        "Remote Access",
+	},
+	classify.ClassTelnet: {
+		BaseHz:       432.0,
+		WaveformType: WaveformSquare,
+		Harmonics:    WaveformPresetHarmonics(WaveformSquare, 432.0, SampleRate),
+		Pan:          -0.5,
+		Group:        "Remote Access",
+	},
+	classify.ClassVNC: {
+		BaseHz:       485.0,
+		WaveformType: WaveformSquare,
+		Harmonics:    WaveformPresetHarmonics(WaveformSquare, 485.0, SampleRate),
+		Pan:          -0.4,
+		Group:        "Remote Access",
+	},
+	// --- File Transfer additions (Square, 545-687 Hz) ---
+	classify.ClassFTP: {
+		BaseHz:       545.0,
+		WaveformType: WaveformSquare,
+		Harmonics:    WaveformPresetHarmonics(WaveformSquare, 545.0, SampleRate),
+		Pan:          0.5,
+		Group:        "File Transfer",
+	},
+	classify.ClassSMB: {
+		BaseHz:       612.0,
+		WaveformType: WaveformSquare,
+		Harmonics:    WaveformPresetHarmonics(WaveformSquare, 612.0, SampleRate),
+		Pan:          0.6,
+		Group:        "File Transfer",
+	},
+	classify.ClassTFTP: {
+		BaseHz:       687.0,
+		WaveformType: WaveformSquare,
+		Harmonics:    WaveformPresetHarmonics(WaveformSquare, 687.0, SampleRate),
+		Pan:          0.7,
+		Group:        "File Transfer",
+	},
 	// --- Unknown (Custom harmonics, 771-1375 Hz) ---
 	// D-05/D-06: dissonant harmonic character {1,1.0},{2,0.8},{3,0.4} retained for all Unknown entries.
 	// WaveformType is zero value (WaveformCustom) so bank.go uses the stored Harmonics directly.
@@ -212,4 +308,63 @@ var ClassFreqConfigs = map[classify.TrafficClass]FreqConfig{
 		Pan:       0.5,
 		Group:     "Unknown",
 	},
+	// --- Database additions (Sawtooth, 1543-2182 Hz) ---
+	classify.ClassMySQL: {
+		BaseHz:       1543.0,
+		WaveformType: WaveformSawtooth,
+		Harmonics:    WaveformPresetHarmonics(WaveformSawtooth, 1543.0, SampleRate),
+		Pan:          -0.4,
+		Group:        "Database",
+	},
+	classify.ClassPostgreSQL: {
+		BaseHz:       1732.0,
+		WaveformType: WaveformSawtooth,
+		Harmonics:    WaveformPresetHarmonics(WaveformSawtooth, 1732.0, SampleRate),
+		Pan:          -0.2,
+		Group:        "Database",
+	},
+	classify.ClassRedis: {
+		BaseHz:       1944.0,
+		WaveformType: WaveformSawtooth,
+		Harmonics:    WaveformPresetHarmonics(WaveformSawtooth, 1944.0, SampleRate),
+		Pan:          0.2,
+		Group:        "Database",
+	},
+	classify.ClassMongoDB: {
+		BaseHz:       2182.0,
+		WaveformType: WaveformSawtooth,
+		Harmonics:    WaveformPresetHarmonics(WaveformSawtooth, 2182.0, SampleRate),
+		Pan:          0.4,
+		Group:        "Database",
+	},
+	// --- VoIP (Sine, 2449 Hz) ---
+	classify.ClassSIP: {
+		BaseHz:       2449.0,
+		WaveformType: WaveformSine,
+		Harmonics:    WaveformPresetHarmonics(WaveformSine, 2449.0, SampleRate),
+		Pan:          0.0,
+		Group:        "VoIP",
+	},
+	// --- Infrastructure auto-assigned (Triangle, 2950-3250 Hz) per D-02 ---
+	classify.ClassLDAP: {
+		BaseHz:       2950.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 2950.0, SampleRate),
+		Pan:          -0.2,
+		Group:        "Infrastructure",
+	},
+	classify.ClassKerberos: {
+		BaseHz:       3250.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 3250.0, SampleRate),
+		Pan:          0.0,
+		Group:        "Infrastructure",
+	},
+	classify.ClassSyslog: {
+		BaseHz:       3050.0,
+		WaveformType: WaveformTriangle,
+		Harmonics:    WaveformPresetHarmonics(WaveformTriangle, 3050.0, SampleRate),
+		Pan:          0.2,
+		Group:        "Infrastructure",
+	},
 }