Cisco SPA112 Administration Guide

Configuring the Voice Settings
SIP
Cisco SPA100Series Administration Guide 53
4
SIP Timer Values
Field Description
SIP T1 RFC 3261 T1 value (round-trip time estimate), which can
range from 0 to 64 seconds.
Default setting: 0.5
SIP T2 RFC 3261 T2 value (maximum retransmit interval for non-
INVITE requests and INVITE responses), which can range
from 0 to 64 seconds.
Default setting: 4
SIP T4 RFC 3261 T4 value (maximum duration a message remains
in the network), which can range from 0 to 64 seconds.
Default setting: 5
SIP Timer B INVITE time-out value, which can range from 0 to 64
seconds.
Default setting: 32
SIP Timer F Non-INVITE time-out value, which can range from 0 to 64
seconds.
Default setting: 32
SIP Timer H H INVITE final response, time-out value, which can range
from 0 to 64 seconds.
Default setting: 32
SIP Timer D ACK hang-around time, which can range from 0 to 64
seconds.
Default setting: 32
SIP Timer J Non-INVITE response hang-around time, which can range
from 0 to 64 seconds.
Default setting: 32
INVITE Expires INVITE request Expires header value. If you enter 0, the
Expires header is not included in the request. Range: 0–
(2
31
–1)
Default setting: 240
ReINVITE Expires ReINVITE request Expires header value. If you enter 0, the
Expires header is not included in the request. Range: 0–
(2
31
–1)
Default setting: 30

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