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These are the steps to setup Lync 2013 to work with Enterprise Voice through a Cisco router running CME (CallManager Express) or an Adtran 7000 router like the NetVanta 7100.

From the Lync Topology Builder open your site, Shared Components then right-click on PSTN Gateways and select New.  Enter the IP address of your router and choose next.  Click Next again.  On the last page change SIP Transport Protocol from TLS to TCP, select your mediation server if it’s not already automatically chosen and choose finish.  Publish the updated topology.

PSTN Gateway









PSTN Gateway last page









Next hop over to the Lync Server 2013 Control Panel.  Choose Voice Routing and then Trunk Configuration.  Edit your site configuration and scroll down to Called Number Translation Rules.  I added 2 rules, one to remove + and the other to remove 9 for outbound calls.

Lync Called Number Translation













Next go to Dial Plan and edit the site dial plan.  If you don’t have one create one for your Lync site.  Scroll down to Associated Normalization Rules and create a new rule.  I created a rule where the call that matched had to be at least 3 digits and I didn’t remove or add any digits.

Site Dial Plan




Next go to Route and choose New.  Name your route and then add patterns to match for outbound calls and extensions on your CME or 7100 router.  I chose to add 9 followed by anything for outbound calls and then 2.., 3.. and 60. as those are all the ranges used in our router.   Under Associated Trunks add the PSTN gateway we configured earlier.

Add Lync Route














Lastly go to users, edit the desired user and change the Telephony option to Enterprise Voice.  In the line URI put the desired Lync extension and if desired the PBX extension of the user as well like this:  “tel:410;ext=210”.  410 is the Lync number and 210 is that user’s number on the router.

Lync User Setup







Ok, that should do it for Lync.  Now let’s configure the the router and setup the SIP trunk.  In my case the Lync server was at and as mentioned before my Lync extensions were 4xx.

For the Cisco router:

dial-peer voice 14 voip
 description **Incoming from LYNC 2013**
 session protocol sipv2
 session target ipv4:
 incoming called-number .%
 voice-class sip dtmf-relay force rtp-nte
 dtmf-relay rtp-nte
 codec g711ulaw
 no vad

dial-peer voice 15 voip
description **Outgoing to Lync 2013**
 destination-pattern 4..
 session protocol sipv2
session target ipv4:
session transport tcp
dtmf-relay rtp-nte
codec g711ulaw
 no vad

For the Adtran router:

voice trunk T04 type sip
  description “Lync 2013”
  no reject-external
  sip-server primary tcp 5068

voice grouped-trunk LYNC
  description “Lync 2013”
  trunk T04
  accept 4XX cost 0


A few things to note:

  • On the Adtran 7100, you will need to make sure that “no reject-external” is on your trunk to the PSTN, whether SIP or PRI, or else the calls will not be able to traverse from trunk to trunk.
  • In my case I stripped the 9 in Lync before I passed it on to the PBX.  The Adtran likes this, but if I recall the 9 may be required when connecting to CME as it needs it to match the outgoing dial-peer to the PSTN.
  • I then went on to configure the PBXs to dial both the internal PBX number and the Lync number at the same time.  In CME this is through Single Number Reach and in the 7100 this is through Find Me Follow Me.
  • I’ve noticed that when making a call from Lync there are a few beeps before the call is placed and ringback is heard.  It seems like it’s searching for a route.  I will update this post if I determine what the cause is.