Cisco Systems H.323/SIP Guía de usuario descargar pdf (Pagina 10)

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Administrator Guide for Cisco Unified MeetingPlace H.323/SIP IP Gateway Software Release 5.2.1

OL-6571-02

Chapter 1 Introducing Cisco Unified MeetingPlace H.323/SIP IP Gateway Software Release 5.2.1

Information About Cisco Unified MeetingPlace H.323/SIP IP Gateway Software Release 5.2.1 Components

Cisco Unified MeetingPlace H.323/SIP IP Gateway Software Release 5.2.1

IP telephony uses your data network infrastructure to transmit voice packets. The underlying technology

that is used by IP telephony applications is Voice over IP (VoIP), which enables different types of

endpoints—IP phones, PSTN phones, and H.323 clients, for example—to communicate over your

network.

The following sections provide information about VoIP concepts and how they relate to Release 5.2.1:

• Standards That are Supported by Cisco Unified MeetingPlace H.323/SIP IP Gateway Software

Release 5.2.1, page 1-4

• Protocols That Cisco Unified MeetingPlace H.323/SIP IP Gateway Software Release 5.2.1 Uses,

page 1-5

• Dual Tone Multi-Frequency Support by Cisco Unified MeetingPlace H.323/SIP IP Gateway

Software Release 5.2.1, page 1-5

• Audio Quality During a Cisco Unified MeetingPlace Meeting, page 1-6

Standards That are Supported by Cisco Unified MeetingPlace H.323/SIP IP Gateway Software

Release 5.2.1

Release 5.2.1 supports the following networking and telephony standards:

• H.323

• SIP

• RTP

• Codec G.711 alaw and ulaw (64 kbps) and G.729a (8 kbps)

Note By default, G.729a is not enabled, and G711 codec calls are negotiated first. For more

information about assigning codec preferences, see the Configuration Guide for Cisco Unified

MeetingPlace Audio Server Release 5.3 at the following URL:

http://www.cisco.com/en/US/products/sw/ps5664/ps5669/products_installation_and_configura

tion_guides_list.html

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Cisco Systems H.323/SIP Guía de usuario Pagina 10