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• Ensure you have an active UMTS connection and are within UMTS network 

coverage. If you start the sharing session while you are within UMTS network 
coverage and a handover to GSM occurs, the sharing session is discontinued, 
but your voice call continues.

• Ensure that both the sender and recipient are registered to the UMTS network. 

If you invite someone to a sharing session and that person’s device is turned 
off, or the person is not within UMTS network coverage, they do not know that 
you are sending an invitation. However, you receive an error message that the 
recipient cannot accept the invitation.

A person-to-person connection is also known as a session initiation protocol (SIP) 
connection. The SIP profile settings must be configured in your device before you 
can use 

.

Ask your service provider for the SIP profile settings, and save them in your device. 
Your service provider may send you the settings over the air.

If you know a recipient’s SIP address, you can enter it on your contact card for that 
person. Select 

> 

, a contact, and 

 > 

 > 

. Enter the SIP address in the format sip:username@domainname (you can 

use an IP address instead of a domain name). 

To receive a sharing session, the recipient must install 

 and configure 

the required settings on their mobile device. You and the recipient must both be 
registered to the service before you can start sharing.

To receive share invitations, you must be registered to the service, have an active 
UMTS connection, and be within the UMTS network coverage.

1. When a voice call is active, select 

 > 

 > 

.

2. The device sends the invitation to the SIP address you have added to the 

contact card of the recipient. 

If the recipient has several SIP addresses in the contact card, select the SIP 
address to which you want to send the invitation, and 

 to send the 

invitation.