NEC Univerge SV8100 Features And Specifications Manual page 754

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System IP Phones and Analog Trunks

Due to the nature of analog-to-digital conversion, considerable echo may be encountered when using

Analog Trunks with IP Phones.

Due to all Analog trunks being different, padding of the Analog Trunks in Programs 81-07 and

14-01 may be necessary. Even after the pad changes are made, an echo may still be present the

first few seconds of the call while echo cancellers are learning the characteristics of the circuit on

For best performance, it is recommended to use digital trunks when using IP phones.

Digital (ISDN, T-1, and SIP) trunks do not suffer from this problem.

The voice quality of VoIP depends on variables such as available bandwidth, network

latency and Quality of Service (QoS) initiatives, all of which are controlled by the network

and Internet service providers. Because these variables are not under its control, NEC

cannot guarantee the performance of the user's IP-based remote voice solution. Therefore,

NEC recommends connecting VoIP equipment through a local area network using a Private

IP Multiline Stations must register with the IP address of the IPLA. The IP Multiline stations

registering via a URL is not supported.

If an internal paging group has only IP Multiline Stations, mutlicast is used for the page. IP

multiline terminals must have a gateway programmed to accomplish a multicast

transmission. When an actual gateway device does not exist on the network, a dummy

gateway address on the same subnet must be defined. If the paging group has any TDM

stations or an external speaker, multicast is not used and the gateway is not required.

The system sees terminal types 1 (Economy), 2 (Value), 3 (Desi-Less), 4 (Sophisticated)

and 5 (Softphone) as the same terminal type.

When using Multiple Logon, the same Personal ID index can be assigned to an

ITL/Softphone, a CTI (Desktop), and an MH240 terminal type.

Two ports of the same terminal type (Program 15-05-26) cannot be assigned to the same

Personal ID index (Program 15-05-27).

Program 10-46-01 must be set to 1 (Auto) or 2 (Manual) for Multiple Logon to work.

When three ports are assigned the same Personal ID index in Program 15-05-27, if

Program 15-05-26 is not set for those ports, the terminal types will be assigned based on

order of login. If Program 15-05-26 is set, the login order does not matter and they will

assign the correct port.

The Override feature functions the same as single login.

UNIVERGE SV8100

IP Multiline Station (SIP)

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