Category Archives: Microsoft Lync

To support mobile users from both inside and outside the corporate network, your internal and external web FQDNs must meet some prerequisites. In addition, you may need to meet other requirements, depending on the features you choose to implement: New … Continue reading →

Internal DNS records You need to create one of the following internal DNS records: Record type Host name or SRV definition Resolves to CNAME lyncdiscoverinternal.<sipdomain> Internal Web Services fully qualified domain name (FQDN) for your Director pool, if you have … Continue reading →

Internal and External DNS Requirement Internal DNS Server Records Record Type Record Location Record Name maps to SRV Record Internal DNS _sipinternal._tcp. <domain name> FE Server VIP SRV Record Internal DNS _sipinternaltls._tcp. <domain name> FE Server VIP A Record Internal … Continue reading →

We recommend that you open only the ports required to support the functionality for which you are providing external access. For remote access to work for any edge service, it is mandatory that SIP traffic is allowed to flow bi-directionally … Continue reading →

The firewall port requirements for external (and internal) SIP and conferencing interfaces are consistent, regardless of the version of your client or the version of the federation partner. Configuring the Audio/Video port range of 50,000-59,999 must take into account that … Continue reading →

Microsoft Lync Server 2013 does a commendable job building on the features introduced in Lync Server 2010, making the transition to this new version compelling for IT managers and unified communications (UC) implementers. Like its predecessor, Lync Server 2013 provides … Continue reading →

For all clients except for the Lync Windows Store app During DNS lookup, SRV records are queried and returned to the client in the following order: lyncdiscoverinternal.<domain>   A (host) record for the Autodiscover service on the internal Web services lyncdiscover.<domain>   A (host) … Continue reading →

Lync Server 2013 on premises is licensed in the Server/Client Access License (CAL) model. There are two types of licenses relevant to this model. Server Client access In addition to Server/CAL licenses, customers will need to acquire the appropriate client … Continue reading →