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Chapter 8. SIP Services
Note: If more than one Messenger client performs file transfer through the Telecommuting Module at the same
time, they could end up sending to each other’s peers instead of their own. An attacker could possibly use this to
intercept transfered files; don’t use this mechanism to transfer sensistive data.
Here, you select to turn Open port 6891 On or Off. Recommended setting is Off.
Allow RFC 2069 authentication
Some SIP units can’t handle Digest authentication as described in RFC 2617, but they still do authentication. 3Com
VCX IP Telecommuting Module can allow the simpler form of authentication described in RFC 2069 to be able to
interoperate with these units.
To allow this can decrease security. Use it only if units in your system need it.
Select if authentication according to RFC 2069 should be allowed (On) or not (Off). It is recommended to keep this
setting off.
Save
Saves the Interoperability configuration to the preliminary configuration.
Cancel
Reverts all of the above fields to their previous configuration.
Look up all IP addresses again
Looks up the IP addresses for all DNS names on this page in the DNS servers you entered on the Basic
Configuration page.
Sessions and Media
Here, settings are made for the SIP timeouts and sessions negotiated via the Telecommuting Module.
Registrar Limits
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