NEC UNIVERGE NEAX 2000 IPS - Manual (Page 262)

Chapter 13 Voice Over IP (VoIP)
Page 13- 20 UNIVERGE NEAX 2000 IPS Request for Proposal (RFP) Reference Guide
Issue 6
H.323 IP Trunk Specifications
Description Specifications
QoS signaling
IP Precedence/DiffServ
(assigned on an IP trunk basis)
Speech encoding/decoding G.711/G.729a/G.723.1
Payload size
G.711/G.729a : 20 ms, 30 ms, 40 ms
G.723.1 : 30 ms (fixed)
Call model Gatekeeper Routed/Direct
H.323 procedure Normal Connect/Fast Connect
Supplementary service (defined in H.450) Not available
Registration on Gatekeeper Static registration
DHCP server Not supported
FAX communications Not available
PAD control Controlled in a node basis
Echo canceller Controlled in a node basis
Tandem connection
IPT to IPT/IPT to ACIS
: available (but voice quality may deteriorate)
IPT to CCIS : available
IPT to ISDN : available
IPT to analog C.O. : available
IPT to MFC : not available
IPT connection mode Point to Multipoint
Dynamic jitter buffer 10 to 600 ms (10 ms increment)
Required Equipment for H.323
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.