Managing Polycom MCUs and Endpoints with GnuGk

Problems with MGC firmware 7.5.2 and later

Starting with ver 7.5.2 and later and MGC 8.0, the MGC now sends an additional terminalAlias called dialedDigits containing the gateway prefix. In GnuGk, the first IP board to register with the prefix registers successfully. However, the second IP board to register with the prefix is rejected due to duplicateAlias.

To solve this, GnuGk 2.2.7 implements a filter by endpoint type:

[RasSrv::RRQFeatures] AliasTypeFilter=terminal;dialeddigits AliasTypeFilter=gateway;h323id

This will filter the aliases to only register the alias types specified (seperated by ','). If an alias type as specified in the filter is not present in the RRQ then it will just registers as per normal with whatever aliases are provided. In this way you can filter out the duplicate alias item.

When you add these filters without restaring your gatekeeper, make sure you unregister your endpoints before you reload your configuration.

Polycom Compatibility

Here is a list of Polycom products others have tested with GnuGk. Please submit your test results!

Product GnuGk Version Tester Comment

Polycom 512 1.0 adi@adis.on.ca OK

Polycom MGC-100 Release 7.0 2.2.2 hightechtalent@yahoo.com OK, use "Register as Gateway"

MGC 100 Ver. 7.5.1.7 2.2.2 doctorwu@cac.washington.edu OK

MGC 100 Ver. 7.5.2.24 2.2.2 doctorwu@cac.washington.edu Failed, must use GnuGk 2.2.7

Polycom PVX 8.0.1 2.2.4 Michel.Raes@UGent.be OK

Polycom ViaVideo 5.0 2.0.5 kaenel@switch.ch OK

Polycom Viewstation EX 5.1 2.0.5 kaenel@switch.ch OK

Polycom Viewstation SP 7.2.4 2.0.5 kaenel@switch.ch OK

Polycom VSX 7000 2.0.8 schlatter@switch.ch OK, use OpenH323 >= 1.14.1

Last updated: 22. Jun 2008
Page maintained by Jan Willamowius