Figure 7-1 Common Ip Network Using Nec Sl2100 Sip Trunk - NEC Sl2100 Networking Manual

SL2100
With the NEC SL2100 system, SIP trunks can receive incoming calls with Caller ID, place outgoing
calls, and transfer SIP trunks to IP, SIP, analog and digital stations, and across a network.
Currently, however, SIP Centrex Transfer is not supported.
If a common carrier supports SIP, the NEC SL2100 can connect the SIP Carrier and outgoing calls to
the PSTN (Public Switched Telephone Network) network and the common IP network using an NEC
SL2100 SIP trunk.
Chassis
SIP Multiline
Terminal

Figure 7-1 Common IP Network using NEC SL2100 SIP Trunk

3.1.1 SIP Trunking Requirements
The following are required when using the SIP trunk on the NEC SL2100 system:
• CPU-C1 software
• VOIPDB (VoIP Daughter Board) Programming Conditions
The following conditions apply when programming the NEC SL2100 system for SIP Trunking:
• If entries are made in Program 10-29-xx for a SIP Server and the SIP Server is then removed or not
used, the entries in Program 10-29-xx must be set back to their default settings. Even if Program
10-29-01 : SIP Proxy Setup – Outbound Proxy is set to 0, the NEC SL2100 system checks the
settings in the remaining 10-29 programs.
• SIP Multi-profile support is added. The simultaneous use of a SIP trunk interconnection and a SIP
trunk carrier connection or six SIP carriers at the same time is supported.
Limitations:
- Each profile requires a different number for every SIP trunk port set in PRG 84-14-06.
- Six carriers must be connected using a single route. The system only supports one gateway.
- Only one DNS server can be set for the SL2100 to connect to six different SIP Carriers.
7-2
SIP CARRIER
SIP Registrar
SIP Proxy
DNS
SIP
NAPT
ISSUE 1.0
PSTN
Internet /
IP VPN
SIP UA
SIP Trunking