TP-8/16/24/32/64S User Manual Version No.: V1.2
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1.2 Product Features
1.2.1 Function characteristics
Multiple communication protocols: it supports session initiation protocol (SIP),
has advantages of strong expansibility, good compatibility and the like, and is
capable of interacting with all sorts of IMS platforms.
Perfect business supply ability: It supports distributed networking application,
cooperates with IMS platform to build IP voice access network, and supports IMS
value-added business, and inherits PSTN traditional business.
Reliable security: It supports to encrypt signaling and media stream respectively
and supports MD5 encryption technology. Meanwhile, it refuses illegal access and
business interference.
Firewall/NAT penetration: It adopts port mapping or special agent technology.
Penetrating firewall/NAT device can be disposed in the inside of local area network.
Flexible IP address configuration: It includes static configuration, DHCP dynamic
obtainment and PPPoE number dialing obtainment.
Simple management maintenance: It is based on WEB network management, and
also supports many configuration modes of CLI, TELNET and OMC (SNMP).
Telecommunication-level reliability: It can inspect failures and perform network
management alarm; and supports network re-connection after outage and SBC dual
homing. It is possible to register on the two SBCs of IMS and supports active
standby switch. Power source and interface are in possession of functions of
over-current protection and over-voltage protection.
1.2.2 Voice characteristics
Communication protocol: SIP (RFC3261, 3GPP)
Authentication ways: It supports authentication ways of SIP Digest, HTTP Digest
and IMSAKA.
Voice coding: G.711a/u, G.723.1 (5.3kbps/6.3kbps), G.729
Voice quality: voice activity detection (VAD), comfort noise generation (CNG),
Jitter Buffer dynamic adjustment, echo cancellation (complying with ITU-T
G.165/G.168), package loss compensation technology, DTMF detection/generation,
output/input gain control
Dialing rules: It supports E.164 coding rule, custom dialing rule and automatic
search agent server.
DTMF standard: Inband audio, outband over RTP (RFC2833/SIP INFO)
