NEC UNIVERGE NEAX 2000 IPS - Manual (Page 259)

Chapter 13 Voice Over IP (VoIP)
UNIVERGE NEAX 2000 IPS Request for Proposal (RFP) Reference Guide Page 13- 17
Issue 6
Service Conditions (IP CCIS via IP Trunk cards)
1. Maximum voice channels per IP trunk card depends on the payload period as follows (payload
period can be assigned in system programming):
Payload Period Maximum Voice Channels per IP Trunk
10 ms 4
20 ms 8
30 ms 16
40 ms 16
2. Maximum 127 voice channels can be provided per system (point-to-multipoint connection).
3. IP trunk cards must be connected with the intranet via router.
IP Trunk Card Specifications
Description Specifications
QoS signaling IP Precedence/DiffServ
Speech encoding/decoding G.711/G.729a/G.723.1
Payload period
G.711/G.729a : 20 ms, 30 ms, 40 ms
G.723.1 : 30 ms (fixed)
FAX communications protocol T.30
FAX mode detection timer 0 to 5 min. (1 min. increment)
PAD control Controlled in a node basis
Tandem connection
IPT to IPT/IPT to ACIS: available (but voice quality may deteriorate)
IPT to ISDN : available
IPT connection mode
Fixed Connection Mode or Automatic Disconnect Mode can be
assigned per IPT trunk or destination node in system programming.
Dynamic jitter buffer 10 to 600 ms (10 ms increment)
Required Equipment for IP CCIS via IP Trunk cards
Equipment Name Functional Name Function
SPN-IPTB-A
PN-IPT
IPT
IP Trunk Card Accommodates the IP network and
transmits/receives compressed voice or signals over IP
network. 10 BASE-T/100 BASE-TX twisted pair cable is
connected directly to this card.
SPN-4VCTI-A
W/Cable
VCT
4-channel CODEC Card for IP Trunk (max of four per IPTB)
Voice compression protocols:
G723.1, G729A, G711, FAX (14.4 kbps),DTMF signals
Used together with PN-IPTB card.