feat: switch SIP baseline to PCMA

deploy/render_asterisk.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""Render an explicit, outbound-only UDP baseline. Does not start services."""
+"""Render an explicit, outbound-only UDP/PCMA baseline. Does not start services."""
 
 import argparse
 import ipaddress
@@ -48,7 +48,7 @@ def endpoint(name, data, env):
     registration = data.get("register", False)
     if not isinstance(registration, bool) or registration and mode != "digest":
         raise ValueError("registration requires explicit digest authentication")
-    text = f"[{name}]\ntype=endpoint\ntransport=transport-udp\ncontext=deny-inbound\ndisallow=all\nallow=ulaw\ndirect_media=no\nrtp_symmetric=yes\nforce_rport=yes\nrewrite_contact=yes\naors={name}-aor\n"
+    text = f"[{name}]\ntype=endpoint\ntransport=transport-udp\ncontext=deny-inbound\ndisallow=all\nallow=alaw\ndirect_media=no\nrtp_symmetric=yes\nforce_rport=yes\nrewrite_contact=yes\naors={name}-aor\n"
     from_user = data.get("from_user")
     if from_user is not None:
         if not isinstance(from_user, str) or not re.fullmatch(