Cisco SIP IP Phone User Manual

A-9
Cisco SIP IP Phone Administrator Guide
Appendix A SIP Compliance with RFC 3261 Information
Transport Layer Protocols
Transport Layer Protocols
SIP Security
Authentication
SIP DNS Records Usage
SIP DTMF Digit Transport
m—Media name and transport
address
Yes
a—Media attribute lines Yes
Protocol Supported?
Unicast UDP Yes
Multicast UDP No
TCP No
Basic Authentication No
Digest Authentication Yes
Proxy Authentication No
PGP No
DNS Resource Record Type Supported?
Type A Yes
Type SRV Yes
Transport Type Supported?
RFC 2833 Yes
In-band tones Yes
SDP Headers Supported?

Cisco SIP IP Phone Specifications

General

Brand	Cisco
Model	SIP IP Phone
Category	IP Phone
Language	English