diff --git a/lib/utils.js b/lib/utils.js
index 42e8978..c35be32 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -30,11 +30,14 @@ function makeRtpEngineOpts(req, srcIsUsingSrtp, dstIsUsingSrtp, teams = false) {
     dstOpts.flags.push('inject DTMF');
     srcOpts.flags.push('inject DTMF');
   }
+  const acceptCodecs = process.env.JAMBONES_ACCEPT_AND_TRANSCODE ?
+    process.env.JAMBONES_ACCEPT_AND_TRANSCODE :
+    process.env.JAMBONES_ACCEPT_G729 ? 'g729' : '';
   const common = {
     'call-id': req.get('Call-ID'),
     'replace': ['origin', 'session-connection'],
     'record call': process.env.JAMBONES_RECORD_ALL_CALLS ? 'yes' : 'no',
-    ...(process.env.JAMBONES_ACCEPT_G729 && { codec: { mask: 'g729', transcode: 'pcmu' } })
+    ...(acceptCodecs && { codec: { mask: acceptCodecs, transcode: 'pcmu,pcma' } })
   };
   return {
     common,