IP Multiline Station (SIP)SECTION 1 INTRODUCTIONThe NEC SL2100 system supports IP extensions. These telephones have the same look andfunctionality as typical multiline telephones, but they are connected to the CPU via IP rather than by ahardwired connection to a station card.The following terminal is supported.• IP7WW-8IPLD-C1 TELThe voice quality of VoIP is dependent on variables such as available bandwidth, network latency andQuality of Service (QoS) initiatives, all of which are controlled by the network and Internet ServiceProviders. Because these variables are not in NEC control, it cannot guarantee the performance of theuser’s IP-based remote voice solution. Therefore, NEC recommends connecting VoIP equipment through alocal area network using a Private IP address.SECTION 2 IP TO TDM CONVERSIONWhen an IP telephone calls a [ ]TXH-A1 multiline telephone, single line telephone or trunk, the speechmust be converted from IP to TDM (Time Division Multiplexing) technology. The VoIPDB daughterboard provides this function.It is possible for 8IPLD IP Phones to talk directly to other 8IPLD IP Phones without using a VoIP DSPresource. For more information, refer to Peer-to-Peer on page 9-3.2.1 8IPLD IP Multiline TelephonesThe IP multiline telephone operates in the same way as a digital multiline telephone. It has all featuresand flexibility you expect from a digital multiline telephone. The difference is that the IP telephone hasan RJ-45 for connection to an IP network, rather than an RJ-11 for connection to a digital extensionport.Networking Manual 9-1IP Multiline Station (SIP)9
