NEC SL1100, Networking Manual

Page: 215 / 292

NEC SL1100 Issue 6.0
Networking Manual 10 - 3
NAT Mode for SIP Phone (Version 4.0 or higher)

NAT mode for SIP Phone which can not use SIP P2P mode and standard SIP
video call feature uses P2P mode cannot establish in same system.

When PRG 10-33-05 NAT mode for SIP phone is set to 1 - Enable, P2P mode
for SIP Phone becomes always Off regardless PRG 10-26-03 setting.

With Version 4.0 or higher the system time can be provided using NTP time
server updates to standard SIP terminals.

When connecting multiple SIP Phones via NAT, PRG 15-05-18 has to be set to
admit the registration of multiple SIP Phones which are using the same IP
address. For example, if you had a STD SIP Terminal that had two lines
registering with the same IP Address, you would need to flag PRG 15-05-18 for
both Extension numbers.

In the router/firewall that the SL1100 resides behind port forwarding is required.
Port forwarding at the SIP Terminal end is not required as long as PRG 15-05-
45 (Plug and Play) is enabled, which it is by default. The ports that must be
forwarded to the SL1100 are as follows:

UDP Port 5070 MUST be forwarded to the IP Address assigned in PRG
10-12-09. UDP Ports 10020 ~ 10083 MUST be forwarded to the IP
Address assigned in PRG 84-26-01.
S
ECTION
2
P
ROGRAMMING
2.1 Card Setup
Program
Number
Program Name Description/Comments Assigned Data 1 2 3
10-03-01
ETU Setup – VoIPDB
Pkg Trunk Logical Port Number 0~200
(READ ONLY)
Default is 0
X
10-03-02
ETU Setup – VoIPDB Trunk Type 0 = H.323
1 = SIP
Default is 1
X