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07MSL4050-DS4

SL4050/2/EUI/K

2 Line VoIP SIP Phone with 2X 10/100Base-TX, EUI power, 
North American power cord. Color: Black

SL4050/2/EUI/A

2 Line VoIP SIP Phone with 2X 10/100Base-TX, EUI power, 
European power cord. Color: Black

SL4050/10/EUI/K

2 Line VoIP SIP Phone with 2X 10/100Base-TX, EUI power, 
North American power cord. Color: Black

SL4050/10/EUI/A

2 Line VoIP SIP Phone with 2X 10/100Base-TX, EUI power, 
European power cord. Color: Black

P0805

EUI 110–240V to 5V power transformer—Order country-specific power 
cord

0805-INF-POE-5

IEEE 802.3af Power over Ethernet (PoE) splitter—5VDC output

Ordering Information

Typical application

Specifications

Protocol

IETF SIP RFC3261

Network Interface

RJ45 x 2, 10/100Base-T

Call Features (SIP server support
required)

Call Transfer (Unattended/Blind &
Announced) • Call Forward (Busy/No
Answer/Unconditional) • Anonymous Call
Blocking • Out-of-band DTMF (RFC
2833) • Message Waiting Indicator • Call
Park/Pickup • Group Pickup

Voice Codec

G.711µ-law • G711a-law • G.723.1 (5.3k)
• G.723.1 (6.3k) • G.729a/b

Phone Functions

Multi-user (up to 4 SIP accounts) • One
touch dial (up to 9 records) •
Speakerphone • Pre-dial before sending •
Handset/Speakerphone Volume adjust-
ment • Speed dial (10 records) • Phone

book (200 records) • Multi-line
(SL4050/10—up to 10 lines,
SL4050/2—up to 2 lines) • Call history
(Incoming calls/Outgoing calls/Missed
calls)

SIP Server Support

Registrar Server (setting from web) •
Outbound Proxy (setting from web)

Security

HTTP 1.1 basic/digest  authentication for
Web setup • MD5 for SIP authentication
(RFC 2069/ RFC 2617)

Dial Methods

Direct IP call without SIP registration •
Dial registered number via SIP server •
Dial URI from phone book/speed dial

Voice Quality

VAD (Voice Activity Detection) • CNG
(Comfort Noise Generation) • AEC

(Acoustic Echo Cancellation) • G.168 •
Jitter buffer

QoS

ToS field • IEEE 802.1q VLAN • Tone •
DTMF –(inband, out of band, SIP info) •
Ring Tone, 4 selectable tones • Ring
Back Tone (local and remote) • Dial Tone
• Busy Tone

IP Assignment

Static IP • DHCP • PPPoE

NAT Traversal

UPnP • STUN

TCP/IP

IP/TCP/UDP/DHCP/RTP/RTCP/ •
ICMP/HTTP/SNTP/TFTP/DNS

Configuration

Key & LCD configuration • Web browser
configuration • Auto/Manual provisioning
system

Firmware Upgrade

TFTP • Auto/Manual provisioning system

Power

External Power supply • Input AC

110–220V • Output DC 5V • (PoE exter-

nal adapter to be offered later as an

accessory)

Environmental

Operating temp.: 40°C • Storage temp.: -

20.60°C • Operating humidity: 20%.80%

Physical Dimensions

(SN4050/10)

Size: 220(L) x 170(W) x 100(H) mm •

Weight: 845g • Color: White

Compliance

FCC Part 15 Class B • CE Class B • VCCI

Class B • EN60950

Patton is a registered trademark of Patton
Electronics Company in the United States and
other countries. 

LAN

LAN

Power over Ethernet (803.2af)

SL4250

SN2400

PSTN

Internet

Intranet

5VDC

5VDC

Patton-Inalp Networks AG 

Meriedweg 7

CH-3172 Niederwangen

Switzerland

Phone 

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Patton Electronics Co. 

7622 Rickenbacker Drive

Gaithersburg, Maryland 20879

USA

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PE-Inalp Networks Private Ltd

Old No. 14 and New No.6,

Brahadambal Road,

Nungambakkam High Road

Chennai: 600 034, India

Phone 

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An Associate of

Electronics Co., USA

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