Table Of Contents

Specifications for the Cisco IP Phone 7905G

Physical Specifications

Electrical Specifications

Environmental Specifications

Physical Interfaces

Software Specifications

Specifications for the Cisco IP Phone 7905G

---

This appendix provides specifications for the Cisco IP Phone 7905G. It contains the following sections:

•Physical Specifications

•Electrical Specifications

•Environmental Specifications

•Physical Interfaces

•Software Specifications

Physical Specifications

Table B-1 Cisco IP Phone 7905G Physical Specifications

Description	Specification
Dimensions	Length: 8.5 in. (21.7 cm) Width: 7.0 in. (17.8 cm) Depth: 3.8 in. (9.5 cm) without snap-on base or 5.9 in. (14.9 cm) with base
Weight	2.0 lb (0.9 kg)

Electrical Specifications

Table B-2 Cisco IP Phone 7905G Electrical Specifications

Description	Specification
Power	2.5 to 3.5W (idle to peak)
DC input voltage	48 VDC, 0.2 A—when using the in-line power over the network cable
Power adaptor	Universal AC/DC Voltage Rating 100-120/200-240 VAC ~3.3 x 2.0 x 1.3 in. (~8.5 x 5.0 x 3.2 cm) ~4.8 oz (135 g) for the AC-input external power adaptor ~4 ft (1.2 m) DC cord 6 ft (1.8 m) cord UL/CUL, CE approved

Environmental Specifications

Table B-3 Cisco IP Phone 7905G Environmental Specifications

Description	Specification
Operating temperature	41 to 104×F (5 to 40×C)
Storage temperature	-4 to 140×F (-20 to 65×C)
Relative humidity	10 to 90% noncondensing, operating, and nonoperating/storage

Physical Interfaces

Table B-4 Cisco IP Phone 7905G Physical Interfaces

Description	Specification
Ethernet	RJ-45 8-wire connector, IEEE 802.3 10BASE-T standard
Power	5-VDC power connector

Software Specifications

Table B-5 Cisco IP Phone 7905G Software Specifications 

Description	Specification
Voice-over-IP (VoIP) protocols	One of the following: •H.323 v2 •SCCP
Voice coder-decoders (codecs)	G.729, G.729A, G.729AB G.711 A-law G.711 u-law
Provisioning and configuration	DHCP (RFC 2131) Web configuration via built-in web server Basic boot provisioning (RFC 1350 TFTP Profiling) Dial plan provisioning Cisco Discovery Protocol (CDP)
Security	H.235 for H.323 RC4 encryption for TFTP configuration profiles
Call progress tones	Configurable for two sets of frequencies and a single set of on/off cadences
Voice features	Voice activity detection (VAD) Comfort noise generation (CNG) Dynamic jitter buffer (adaptive)