Educational Service District 123

We recommend using dashes as a separator instead of underscores as the underscores are not compatible with all end-point equipment.

K-20 H.323 Loop Back Port

• Dial : 0310609

Will only work if you have registered with the K-20 Gatekeeper as outlined below

 K-20 Gatekeeper

• K-20 Gatekeeper IP address: 68.179.206.20
• DNS name: gk.wa-k20.net

This IP address will replace the existing address of 68.179.206.20, though both will work in the interim. Some Endpoint equipment will only accept IP addresses for the "gatekeeper" entry. Gatekeeper registration information is available at the K-20 Education Network Portal

Cisco PIX Firewall Ports for H.323 IVC

We recommend that you establish service groups for these settings; i.e. H323_TCP, H323_UDP. We use one “master” UDP service group that opens UDP ports 3230-3253 since that range is needed for our VSX 7000 and inclusive of the ports needed for our other Polycom equipment.

Even in a static-IP environment, you will need to use the “fixed-ports” option in the endpoint equipment settings to restrict the range utilized by the equipment to those listed above (the ones listed for specific equipment are the defaults).

Polycom PVX-specific note: Under the “Network” tab, enable the “Use the External (WAN) IP Address”, then check the box for “Use fixed ports”, and then check “Use the PC’s Local IP Address”. This will cause the “Use fixed ports” option to be active, even though it appears to be grayed-out.