We will see in this article how to configure a Scopserv system so it can communicate with Microsoft Lync/OCS
Two steps are required in order to use an external link, and two other steps are optional:
- Creation of a VoIP Account
- Creation of an incoming line (optional)
- Creation of an outgoing line (optional)
- Update of the appropriate Class of Service (CoS)
Creation of the VoIP Account
In the Telephony -> Interface menu , in the VoIP Account tab, click on ‘Add New VoIP Account ‘
In General tab, set:
- Type: SIP
- Trunk Type: Friend
- Name: LyncGW
In Server tab, set:
- Host Mode: Specific
- Host/IP: (your Microsoft Lync Server host/IP)
- Port: (optional; your Microsoft Lync Server port, default to 5060)
- Register as User Agent? (optional)
In Network tab, set:
- Transport Mode: Both (UDP and TCP)
- Trunk behind a Nat (optional; set only if required)
- Unsecure Port and Invites (optional; required for incoming calls)
- Qualify? (optional)
In Options tab, set:
- DTMF Mode: Automatic Mode DTMF (RFC2833/Inband)
Network Tab: Check boxes: Trunk behind a Nat, Unsecure Port and Invites (required for incoming calls), and Qualifier
Options Tab: Automatic Mode DTMF (RFC2833/Inband)
Creation of incoming line
In the menu Telephony –> Lines, incoming line Tab, click ‘Add a new line’
In General tab, set:
- Type: Extension (DNIS)
- Extension (DNIS): Set the incoming line DNIS
- Trunk: Select the trunk created in the previous step, in this case LyncGW
In Destination tab: Select the desired destination, such a position.
Creation of an outgoing line
In the menu Telephony –> Lines, outgoing line Tab, click ‘Add a new line ‘
In General tab, set:
- Name: The name of your line, for example LyncGW_Out
- Trunk: Select the trunk created in the first step, in this case LyncGW
In Dial String tab: You specify the dial string used to make a call using this outgoing line. Simply put in first, choose a custom dial string and enter ‘X’. This configuration is not adequate but to validate the operation.
Update the Class of Service (CoS)
In the menu Telephony –> Manager, Class of Service Tab, choose the Class of Service where you have defined your internal extensions.
Outgoing Lines tab: Either you check the ‘Allow all outgoing lines’ or you include the LyncGW_Out line in the list authorized lines.
Lync Configuration (Standard Edition)
- Open the Lync 2010 Topology Builder
- Edit the properties of your standard edition pool
- Install the mediation server, I used the Collocated option because load is low enough it doesn’t need a dedicated server.
- Under mediation server take note of the TCP Listening port, as that is the port you need to specify in sip.conf of Asterisk. It defaults to 5068 so that’s what I used.
- At the bottom find the section “The following gateways are associated with this mediation server.”
- Click New, and enter the IP address of your Asterisk server, and the port you use for Asterisk TCP SIP (5060 by default).
- Note that mine has a red X saying i already have this address configured. This is because I was redoing the steps for this tutorial. Also note I have two gateways added as my Asterisk server has multiple IP Addresses and you must make sure to enter all addresses in the gateway list.
- Once this is done make sure to publish your topology and re-run setup if you did not previously have the mediation service installed. I restarted my entire Lync server at this point but if you’d prefer you should be able to restart the Mediation service to apply the new settings.
- Open your Lync control panel, go to users, edit your test user and enable Telephony for Enterprise Voice.
- We use 2XXX range extensions in Lync, and 1XXX range extensions in Asterisk, so you will see tel:+2593, and ext=1593. The ext=1593 is for PSTN Conferencing support so Lync can see me
call from 1593 and know I am Andrew, and automatically authenticate me in to my own conferences..
- Configure Voice Routing -> Dial Plan. These are the rules I wrote in OCS 2007 R2 and imported using import-cslegacyconfiguration. You will need to tweak them for your requirements.
- At this point you should be able to make/receive calls to and from Lync/Asterisk.