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CHAPTER 3 TERMINALS
SPN-8IPLA and SPZ-24IPLA Specifications:
Function
Description
Remarks
Network Interface
Ethernet
- IEEE 802.3 (10BASE-T)
- IEEE 802.3u (100BASE-TX)
- Auto Negotiation
100Mbps
recommended
CPU
MIPS32 4KC (RISC CPU, built-in DSP)
Number of
channels
8ch
Number of
expanded channels
Can be expanded by adding a Sub card
on the Main card. +24ch (+16ch when
using G723.1)
Voice Codec
G711 (64Kbps), G729a (8Kbps), G723.1
(5.3Kbps)
G723.1 (5.3Kbps
only)
Voice Payload
10-40ms (10ms increment), 30ms fixed
with G723.1
Jitter Buffer
10-300ms
DTMF Relay
Available
FAX Relay
Available with (G.711), regarded as
voice call
Pass-Through &
G.711
Modem Relay
Not supported
Under Study
Peer-Peer control
protocol
NEC proprietary protocol (UDP/TCP)
H245 equivalent
VLAN
Tag VLAN (IEEE802.1p)
QoS
IP Precedence, Diffserv
PAD
-14dB --- +14dB
EC
G.168 (Max.64ms), with NLP (Non
Linear Processor) function