Yealink SIP-T2 Series User Manual

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series IP Phones
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Parameters
Permitted Values
Default
Example:
dns_cache_a.1.ip = 192.168.1.13
Web User Interface:
None
Phone User Interface:
None
dns_cache_a.X.ttl
(X ranges from 1 to 12)
Integer from 30 to
2147483647
300
Description:
Configures the time interval (in seconds) that A record X may be cached before the record
should be consulted again.
Example:
dns_cache_a.1.ttl = 3600
Web User Interface:
None
Phone User Interface:
None
account.X.dns_cache_type
0, 1 or 2
1
Description:
Configures whether the IP phone uses the DNS cache for domain name resolution of the
server and caches the additional DNS records for account X.
0-Perform real-time DNS query rather than using DNS cache.
1-Use DNS cache, but do not cache the additional DNS records.
2-Use DNS cache and cache the additional DNS records.
X ranges from 1 to 16 (for SIP-T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
X is equal to 1 (for SIP-T19(P) E2)
Example:
account.1.dns_cache_type = 1
Web User Interface:

Yealink SIP-T2 Series Specifications

General

Audio Codecs	G.722, G.711
Headset Jack	RJ9
Features	Call hold, Call waiting, Call transfer, Call forward, mute, redial
Protocols Supported	SIP, TCP/IP, UDP, RTP, RTCP, DHCP, DNS, NTP, HTTP, HTTPS
Weight	0.8 kg (1.76 lbs)
Operating Humidity	10% to 90% (non-condensing)