Cisco 7931G Manual

Usage notesPurposeNetworking Protocol
RTCP is disabled by default, but you
can enable it on a per phone basis using
Cisco Unified Communications
Manager. For more information, see
Network Configuration Menu .
RTCP works in conjunction with RTP
to provide QoS data (such as jitter,
latency, and round trip delay) on RTP
streams.
Real-Time Transport
Protocol (RTCP)
Like other VoIP protocols, SIP is
designed to address the functions of
signaling and session management
within a packet telephony network.
Signaling allows call information to be
carried across network boundaries.
Session management provides the ability
to control the attributes of an end-to-end
call.
You can configure the Cisco Unified IP
Phone to use either SIP or Skinny Client
Control Protocol (SCCP).
The Cisco Unified IP Phone does not
support the SIP protocol when the
phones are operating in IPv6 address
mode.
SIP is the Internet Engineering Task
Force (IETF) standard for multimedia
conferencing over IP. SIP is an
ASCII-based application-layer control
protocol (defined in RFC 3261) that can
be used to establish, maintain, and
terminate calls between two or more
endpoints.
Session Initiation
Protocol (SIP)
The Cisco Unified IP Phone uses SCCP
for call control. You can configure the
Cisco Unified IP Phone to use either
SCCP or Session Initiation Protocol
(SIP).
SCCP includes a messaging set that
allows communications between call
control servers and endpoint clients
such as IP Phones. SCCP is proprietary
to Cisco Systems.
Skinny Client Control
Protocol (SCCP)
SDP capabilities, such as codec types,
DTMF detection, and comfort noise, are
normally configured on a global basis
by Cisco Unified Communications
Manager or Media Gateway in
operation. Some SIP endpoints may
allow these parameters to be configured
on the endpoint itself.
SDP is the portion of the SIP protocol
that determines which parameters are
available during a connection between
two endpoints. Conferences are
established by using only the SDP
capabilities that are supported by all
endpoints in the conference.
Session Description
Protocol (SDP)
The Cisco Unified IP Phone uses TCP
to connect to Cisco
Unified Communications Manager and
to access XML services.
TCP is a connection-oriented transport
protocol.
Transmission Control
Protocol (TCP)
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 9.0 (SCCP and SIP)
11
Cisco Unified IP Phone 7931G
Network Protocols

Cisco 7931G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Electromagnetic compatibility	FCC Part 15 (CFR 47) Class B, ICES-003 Class B, EN55022 Class B, CISPR22 Class B, AS/NZS CISPR 22 Class B, CISPR 24, VCCI Class B, EN55024, EN 50082-1, EN 61000-3-2, EN 61000-3-3, EN 61000-6-1
Wi-Fi	No
Networking standards	IEEE 802.1Q, IEEE 802.1af, IEEE 802.1p
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	DHCP, TFTP, CDP
Lines quantity	24 lines
Phonebook capacity	- entries
Number of VoIP accounts	-
Voice codecs	G.711a, G.729A, G.729B, G.729ab
Volume control	Digital
Display resolution	192 x 64 pixels
Display number of lines	3 lines
Display number of colors	Monochrome
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Safety	(UL) 60950, (CSA) C22.2 No. 60950, EN 60950, IEC 60950, AS/NZS60950, TS 001
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	229 mm
Width	203 mm
Height	178 mm
Weight	1360 g