IP Phone User Manual

68 CHAPTER 3: CONFIGURING VCX USERS AND SERVICES
8 For each Class of Service, Trunk to Trunk Transfer and Forward to Trunk
dialing can be configured.
■ Trunk to Trunk Transfer — If enabled, users are allowed to transfer a
call from outside the phone system (from a PSTN) to somewhere else
outside the internal phone system. For example, if phone A (located
on the PSTN) calls phone B (located on the VCX system), phone B can
forward the call to phone C (located on the PSTN). This creates a
“bridge” between phone A and phone C and the company of phone
B pays for the call.
Select Whitelist in the Trunk To Trunk Transfer field to allow trunk to
trunk call transfers. Select Blacklist to block trunk to trunk call
transfers.
■ Forward to Trunk — If enabled, users are allowed to forward calls to
the PSTN. For example, a user could configure his or her phone to
forward calls to an international location. Consequently, the user’s
company pays for the long distance call and not the user.
Select Whitelist in the Forward To Trunk field to allow call forwarding
to the PSTN. Select Blacklist to block call forwarding to the PSTN.
Modifying a Class of
Service
You can modify a Class of Service (CoS) to change the following settings:
■ The elements assigned to the (CoS)
■ How elements are applied to inbound and outbound calls (the
whitelist or blacklist status)
■ The Trunk to Trunk Transfer and Forward to Trunk status applied to
calls
To modify a Class of Service:
1 In the USERS menu, click Class of Service.
The Class of Services page appears. See Figure 18
.
2 In the Name column, click the name of the CoS you want to modify.
The Class of Service - Elements page appears.
To add a CoS element:
a Select an element from the Select element to add it to the Class of
Service drop-down list.
b Click Assign.