Features
IP Telephony
Strata CIX General Description 12/07 127
Miscellaneous
• The MIPU / LIPU / GIPH supports both G.711 and G.729A standard codec compressions
simultaneously. The type of compression used is set independently for each telephone in
system programming.
• With the MIPU / LIPU/ GIPH, the IP telephone works with DSL and cable routers.
The MIPU / LIPU / GIPH operates on the network at 100 Mbps and can be connected to a fast
switch router, LAN, WAN, etc. When connecting remote IP telephones to the MIPU / LIPU /
LIPS and GIPH over the Internet, a VPN router is needed to circumvent Network Address
Translation (NAT) and firewall issues by tunneling.
• MIPU / LIPU / GIPH provides MEGACO+ mobility to enable roaming. The LIPU / LIPS and
GIPH enables remote IP telephones to be connected over VPN and non-VPN IP networks.
• MIPU / LIPU / GIPH firmware can be updated locally or remotely using eManager. This
enables service personnel to update IP equipment with new features and enhancements as they
become available. Updates require a brief interruption of IP telephone operation (a few
minutes).
Table 25 Comparison of MIPU and LIPU / GIPH
Feature LIPU / GIPH MIPU
Channels
GIPH: 8 channels
LIPU:16 channels
LIPU+LIPS:32 channels
MIPU16:16 channels
MIPU24:24 channels
Channel Limitation
When LIPU / GIPH is set
Echo canceller tail length
to 32ms in G.729A.
GIPH: 6 channels
LIPU:12 channels
LIPU+LIPS:24 channels
No Limitation
Voice Codec G.711 (Mu-law/A-law), G.729A Same
Echo Canceller
G.168 (04/2000)
Tail Length is Max 32ms.
G.168 (08/2004)
Tail Length is Max 64 ms
IP Address to use
GIPH and LIPU: 1
LIPU+LIPS: 2
1
RTP Packet Transmission
Interval
20/ 30/ 40/ 80 ms
G.711: 20/ 30/ 40 ms
G.729A: 20/ 30/ 40/ 80 ms
VoIP Protocol Support
Megaco+, SIP (Terminal),
Strata Net IP
Megaco+, SIP (Terminal),
Strata Net IP, and SIP Trunking
Priority Control Diffserve, IEEE802.1q (*
1
) Same as LIPU
NAT Traversal xIPU does not support IPT traversal Same as LIPU
VLAN
LIPU and LIPS cards can be set
separately
All channels are set the same.
QoS Measurement
LIPU to IPT,
Between IPT and IPT
Between MIPU and IPT
Between IPT and IPT
Between MIPU
SIP Trunking Not supported. Supported
1
1. Contact the Toshiba Sales Applications Desk for a list of approved providers.
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