Administrator's Guide

Chapter 11. SIP Traffic
The "anything" option means that any character and any number of characters are allowed
in the Tail. The "nothing" option means that the Tail must not contain any character, which
means that the username consists only of the Prefix and Head parts.
If you use a Reg Exp, select "-" as the Tail.
When neither the Advanced SIP Routing or the SIP Trunking module has been installed, this
column only offers a limited number of options.
Min. Tail
Enter the minimum number of characters in the Tail.
This column is only available when the Advanced SIP Routing or the SIP Trunking module
has been installed.
Domain
Enter the domain that the From header should contain. You can enter "*" to match all do-
mains, or "*local" to match all Local SIP Domains.
Reg Expr
Instead of entering a username and domain, you can create regular expressions to match the
incoming Request-URI.
In this expression, you can also make subexpressions, which can be used in the Forward
To table. Subexpressions are made by putting the expression inside parantheses. In the ex-
pression (sip:(.+))@3com.com, which matches any Request-URI like sip:[e-mail],
there are two referable subexpressions: sip:user and user. You can create up to 9 subexpres-
sions per row.
This column is only available when the Advanced SIP Routing or the SIP Trunking module
has been installed.
Read about regular expressions at http://www.regular-expressions.info/. 3Com VCX IP
Telecommuting Module supports Extended Regular Expressions.
Delete Row
If you select this box, the row is deleted when you click on Create new rows or Save.
Create
Enter the number of new rows you want to add to the table, and then click on Create.
Forward To
Here you may enter expressions for the Dial Plan, used to define where and how the
Telecommuting Module should forward the request using the Dial Plan. Expressions can
be defined either by selecting a non-User-account from the Local SIP User Database table,
or by defining a replacement URI, port and transport.
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