Chapter 1 Overview
Supported Protocols
1-10
Cisco VG248 Analog Phone Gateway Software Configuration Guide
OL-1209-02
Supported Protocols
The VG248 supports several industry-standard and Cisco networking protocols
required for voice communication over an IP network. Additionally, the VG248
supports protocols required for remote network management.
These sections provide an overview of the protocols supported by the VG248:
• Data and Voice Protocols, page 1-10
• Network Management Protocols, page 1-10
Data and Voice Protocols
The VG248 supports the following data and voice communication protocols.
• Internet Protocol (IP)—addresses and sends packets across the network.
• Internet Group Management Protocol (IGMP)—used to report multicast
group memberships
• Trivial File Transfer Protocol (TFTP)—allows you to transfer files over the
network.
• HyperText Transfer Protocol (HTTP)—defines how messages are formatted
and transmitted, and what actions Web servers and browsers should take in
response to various commands.
• File Transfer Protocol (FTP)—allows you to transfer files over the network.
• Dynamic Host Configuration Protocol (DHCP)—dynamically allocates and
assigns an IP address to network devices.
• Real-Time Transport Protocol (RTP)—enables transporting of real-time data,
such as interactive voice and video over data networks.
• Skinny Client Control Protocol (SCCP)—enables communication between
the VG248 and Cisco CallManager.
Network Management Protocols
The VG248 supports Simple Network Management Protocol (SNMP) and
implements several industry-standard Management Information Bases (MIBs).
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