Cisco SPA112 Administration Guide

Frequently Asked Questions
Cisco SPA100Series Administration Guide 129
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Q. There is no dial tone, and the Phone 1 or 2 LED is not solid green.
STEP 1 Make sure the telephone is connected to the appropriate port, PHONE 1 or 2.
STEP 2 Disconnect the RJ-11 telephone cable from the PHONE port, and then reconnect it.
STEP 3 Make sure your telephone is set to its tone setting (not pulse).
STEP 4 Make sure your network has an active Internet connection. Try to access the
Internet, and check to see if the ATA WAN LED is flashing green. If you do not have
a connection, then power off all of your network devices, including the modem, the
ATA, and the computers. Wait 30 seconds. Then power on each device in the
following order:
• Cable or DSL modem
• ATA
• Computers and other devices
STEP 5 Verify the settings on the Quick Setup page. Verify that you entered the account
information and settings required by your service provider. On the Voice > Info
page, Line 1 or Line 2 Status section, verify that the Registration State is
registered. If the line is not registered, check with your ITSP to determine if
additional settings are required.
Q. When I place an Internet phone call, the audio breaks up.
Consider the following possible causes and solutions:
• Network activity
There may be heavy network activity, particularly if you are running a server
or using a file sharing program. Try to limit network or Internet activity
during Internet phone calls. For example, if you are running a file sharing
program, files may be uploaded in the background even though you are not
downloading any files, so make sure you exit the program before making
Internet phone calls.
• Bandwidth
There may insufficient bandwidth available for your Internet phone call. You
may want to test your bandwidth by using one of the bandwidth tests
available online. If necessary, access your Internet phone service account
and reduce the bandwidth requirements for your service. For more
information, refer to the website of your ITSP.

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