Telepresence port conflict with Microsoft Lync Server 2013

[jkuehl]

We currently have a Lync Server 2013 configured and working.

Our company purchase Cisco Telepresence and we were told to have these DNS entries added by our ISP

A record:

Telepresence.gov - Public IP

SRV records:

All of the following records will point to telepresence.gov

Record                                                                    Priority                 Weight                 Port

_h323cs._tcp.telepresence.gov                          10                           10                           1720

_h323ls._udp.telepresence.gov                         10                           10                           1719

_sip._tcp.telepresence.gov                                  10                           10                           5060

_sip._udp.telepresence.govv                                10                           10                           5060

_sips._tcp.telepresence.gov                                10                           10                           5061

_turn._udp.telepresence.gov                             10                           10                           3478

_collab-edge._tls.telepresence.gov                  10                           10                           8443

Our Lync server also uses ports tcp/5061 and udp/3478. 

- access-list 101 extended permit tcp any object obj-10.164.1.65 eq 5061

- access-list DMZ_access_in extended permit tcp host 10.164.1.65 any eq 5061

- access-list DMZ_access_in extended permit udp host 10.164.1.65 host 10.10.20.65 eq 3478

When the DNS entries were added by our ISP our external link broke our connection for people to connect to our Lync Server externally.

Can the ports for Telepresence by changed to that they would not conflict with our Lync Server?

[Wayne DeNardi]

Have a look at the Cisco TelePresence Microsoft Lync and Cisco VCS Deployment Guide, bottom of page 60 and top of page 61.  This shows the DNS SRV records that will be required for the VCS and for Lync.

Wayne
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[jkuehl]

This only SRV record i can find that was added for Lync:

SRV record    _sipfederationtls._tcp.DOMAIN.gov to the A record sip.DOMAIN.gov

TCP/5061 is the only open port coming from the outside in for push notifications. 

when i added the SRV records for Telepresence, external users failed to connect, once taken out, everything went back to working fine.

[Patrick Sparkman]

They might use the same ports, but as the document that Wayne points out they use different SRV records.  So even if you use the same domain for both Lync and TelePresence environments, the different SRV records should point to their each respective environment and no cause a conflict.