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CHAPTER
7-1
Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0)
OL-21862-01
7
Using SIP Supplementary Services
SIP supplementary services are services that you can use to enhance your telephone service. These
services include call forward, call return, call forwarding and conference calling.
Common Supplementary Services
The supplementary services described in this section, and their configuration and implementation,
depend on the system of the country in which the service is activated. For information about your
country’s implementation of services, contact your local Cisco equipment provider.
This section contains the following topics:
• Attended Transfer, page 7-2
• Call Pickup, page 7-2
• Caller ID, page 7-2
• Call-Waiting Caller ID, page 7-2
• Call Hold, page 7-2
• Group Call Pickup, page 7-3
• Meet–Me Conference, page 7-3
• Privacy, page 7-3
• Shared Line, page 7-3
• Speed Dial, page 7-4
• Redial, page 7-4
• Unattended Transfer, page 7-4
• Voice Mail Indication, page 7-5
• Voice-Messaging System, page 7-5
• Making a Conference Call in the United States, page 7-5
• Making a Conference Call in Sweden, page 7-6
• Call Waiting in the United States, page 7-6
• Call Waiting in Sweden, page 7-6
• About Call Forwarding, page 7-6
• Call Forwarding in the United States, page 7-7