Cisco SPA112 Administration Guide

Configuring the Network
Advanced Settings
Cisco SPA100Series Administration Guide 35
3
MAC Address Clone (SPA122 Only)
A MAC address is a 12-digit code assigned to a unique piece of hardware for
identification purposes. Some ISPs require that you register a MAC address in
order to access the Internet. If you previously registered your account with
another MAC address, it may be convenient to assign that MAC address to your
ATA. You can use the Network Setup > Advanced Settings > MAC Address
Clone page to assign a MAC address that you previously registered with your
Service Provider.
After making changes, click Submit to save your settings, or click Cancel to
redisplay the page with the saved settings.
Field Description
Flow Control Flow control is a mechanism that temporarily stops the
transmission of data on a port. For example, a situation
might arise where a sending station (computer) is
transmitting data faster than some other part of the
network (including the receiving station) can accept.
The overwhelmed network element will halt the
transmission of the sender for a specified period of time.
Choose Enabled to enable this feature, or choose
Disabled to disable this feature.
Default setting: Enabled
Speed Duplex Choose the duplex mode. You can select from Auto-
negotiate, 10 Half, 10 Full, 100 Half and 100 Full. Cisco
recommends choosing Auto-negotiate to automatically
select the appropriate mode for the traffic. Use caution
with other settings. Problems can result if you choose a
setting that is not appropriate for the network devices.
Default setting: Auto-negotiate
Field Description
MAC Clone Click Enabled to enable MAC address cloning, or click
Disabled to disable this feature.
Default setting: Disabled.

Cisco SPA112 Specifications

General

Supported network protocols	IPv4, IPv6, ARP, DNS, SRV, DHCP, PPPoE, ICMP, TCP, UDP, RTP, RTCP, SNTP
DHCP client	Yes
VPN support	802.1p
Security algorithms	SSL/TLS
Authentication method	SIP
Modem (RJ-11) ports	2
Ethernet LAN (RJ-45) ports	1
Voice codecs	G.711, G.726, G.729
Certification	FCC, CE, ICES, A-Tick, RoHS, UL
Fax compatibility	T.38
Output current	2 A
Output voltage	5 V
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Storage temperature (T-T)	-25 - 70 °C
Operating temperature (T-T)	0 - 45 °C
Operating relative humidity (H-H)	10 - 90 %

Weight and Dimensions

Width	101 mm
Height	28 mm
Weight	153 g