Installation Guide

Chapter 5. SIP Conﬁguration

If you entered more than one IP address/host name for the same domain, you should also assign them Priority and

Weight. A low Priority value means that the unit should have a high priority. If more than one unit has the same

Priority, the signaling sent to them is distributed between them according to their Weight. If two units have the

same priority, and Unit 1 has weight 4, and Unit 2 has weight 9, 4/13 of the signaling will be sent to Unit 1, and

9/13 will be sent to Unit 2.

Delete Row

If you select this box, the row is deleted when you click on Add new rows, Save, or Look up all IP addresses

again.

Create

Enter the number of new groups and rows you want to add to the table, and then click on Create.

Interoperability

Preserve username

When registering a SIP client on one side of the Telecommuting Module to a SIP server on the other side, the

Contact header is normally rewritten. By doing this, we make it possible for the SIP server to track when the same

user is registering multiple times from different places. It is possible to turn this rewriting off and preserve the

username in Contact headers passing through the Telecommuting Module, but that makes it impossible for the SIP

server to tell if registrations for a certain user belong to one or several clients (if a user has two registrations from

different clients and deregisters one of them, the SIP server will delete its only registration for him).

To make all calls work, you need to turn this On.

Select if usernames should be preserved or not. The recommended setting is to Preserve username in Contact

header.

Translation exceptions

Usually, the Telecommuting Module rewrites IP addresses in the SIP signaling to hide it for the receiver. For some

reasons, you might want to except certain IP addresses from being rewritten. Enter those IP addresses in the table.

If you use a dialing domain that looks like an IP address (like 10.10.10.10), you need to enter that domain in this

table.