NEC Univerge SV8100 Features And Specifications Manual page 720

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System IP Phones and Analog Trunks

NEC does not recommend using IP Phones with analog trunks. Due to the nature of analog-to-digital

conversion, considerable echo is created which cannot be removed by the UNIVERGE SV8100 echo

canceller. Digital (ISDN) trunks do not suffer from this problem.

For outgoing calls:

Verify no analog trunk ports exist (CD-4COTB or CD-4ODTA) in the trunk routes (Program 21-02).

For incoming calls:

Ensure there are no IP Phones in the trunk targets (Program22-04 and 22-07).

For transferred calls:

It is impossible to stop an analog trunk call being transferred to an IP Phone. It is important that the

end-user is made aware of this limitation.

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.

UNIVERGE SV8100

IP Multiline Station (SIP)