Specifications

Configuration Tasks

Cisco IOS Release 12.0(3)T

This feature supports the following RFCs:

• RFC 1889—RTP: A Transport Protocol for Real-Time Applications, January 1996; H.

Schulzrinne, GMD Fokus; S. Casner, Precept Software, Inc; R. Frederick, Xerox Palo Alto

Research Centre; V. Jacobson, Lawrence Berkeley National Laboratory

• RFC 1890—RTP Proﬁle for Audio and Video Conferences with Minimal Control, January 1996;

H. Schulzrinne, GMD Fokus

• RFC 2127—ISDN Management Information Base using SMIv2, March 1997; G. Roeck, Editor;

Cisco Systems

• RFC 2128—Dial Control Management Information Base using SMIv2, March 1997; G. Roeck,

Editor; Cisco Systems

• ITU-T H.323—Packet-Based Multimedia Communications Systems, February 1998

• ITU-T Q.400-490 series—Signalling System R2, 1988 to 1993

Conﬁguration Tasks

After you have analyzed your dial plan and decided how to integrate it into your existing IP network,

you are ready to conﬁgure your network devices to support Voice over IP. The actual conﬁguration

procedure depends entirely on the topology of your voice network, but in general you need to

perform the following tasks:

• Conﬁgure IP Networks for Real-Time Voice Trafﬁc

— Conﬁgure Multilink PPP with Interleaving

— Conﬁgure RTP Header Compression

— Conﬁgure Custom Queueing

— Conﬁgure Weighted Fair Queueing

• Conﬁgure Frame Relay for Voice Over IP (if needed for your network topology)

• Conﬁgure Voice Ports

— Conﬁgure ISDN PRI Voice Ports

— Conﬁgure E1 R2 Voice Ports

— Conﬁgure T1 CAS Voice Ports

• Conﬁgure Number Expansion

— Create a Number Expansion Table

— Conﬁgure Number Expansion

• Conﬁgure Dial Peers

— Create a Peer Conﬁguration Table

— Conﬁgure POTS Peers

— Conﬁgure VoIP Peers