NEC SL2100 Features And Specifications Manual page 501

ISSUE 1.0
useful in the case where an office user has an IP Multiline Terminal at work and at home or a
Softphone they use on the road. They log in at work to use the office terminal, and when they get
home or are on the road they login the home terminal or Softphone. When this happens the office
terminal is logged out and they have the same extension number at home or on the road.
Override is supported in a SL2100 system that had a 3rd Party CTI connection to the CPU (i.e.,
Desktop Apps Shared Services) or to a terminal with a 1st Party CTI connection (i.e., PC Assistant/
Attendant and Softphone or 1st Party TAPI driver). Override with CTI is supported on a per station
basis using PRG 15-05-39 with certain restrictions.
System IP Terminals and Analog Trunks
Due to the nature of analog-to-digital conversion, considerable echo may be encountered when using
Analog Trunks with IP Terminals.
• In every system that has analog trunks and IP Terminals PRG 90-68 (Side Tone Auto Setup) must
be run per trunk to minimize any echo problems.
• All phones and trunks must be idle in order to perform the Side Tone Auto Setup test. If any phone
or trunk is in use, "Busy" will be displayed when trying to run 90-68-01.
• All phones will become unresponsive while the Side Tone Auto Setup tests are running.
• Due to all Analog trunks being different, padding of the Analog Trunks in PRG 81-07 and PRG
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
this call.
• For best performance, it is recommended to use digital trunks when using IP Terminals.
Digital (ISDN, T-1, and SIP) trunks do not suffer from this problem.
Conditions
• More than 17 IP Multiline Terminals are not recommended when the same Virtual Extension Keys
are assigned to each IP Multiline Terminal.
• The voice quality of VoIPDB 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
VoIPDB equipment through a local area network using a Private IP address.
• IP Multiline Stations must register with the IP address of the VoIPDB. The IP Multiline stations
registering via a URL is not supported.
• If an internal paging group has only IP Multiline Stations, multicast 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.
• When using Multiple Logon, the same Personal ID index can be assigned to multiple IP Terminals or
Softphone.
• Two ports of the same terminal type (PRG 15-05-26) cannot be assigned to the same Personal ID
index (PRG 15-05-27).
• PRG 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 PRG 15-05-27, if PRG 15-05-26 is
not set for those ports, the terminal types will be assigned based on order of login. If PRG 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.
Features and Specifications Manual
SL2100
I
1-487