VoIP
Aspire Software Manual Features ◆685

IP Extensions

●When the first IP phone is plugged in, the system automatically assigns four consecutive sta-
tion ports available as IP ports (the system takes the next group of consecutive ports avail-
able). The next three IP phones installed will use this group of ports. When the fifth IP phone
is connected, the next 4 consecutive station ports available will be assigned as IP ports.
●After connecting an IP phone, there could be a delay of up to one minute until the system
checks for an IP connection.
●If there is no idle DSP resource or CODEC resource available, the terminal cannot be registered.
●If the same IP address already exists in the LAN, the last one assigned to the phone is considered
valid.
●If a MAC address is registered, but an intercom number is not (Program 11-02), then the DRS
rejects a registration and the IP phone display reads “Illegal Len”.
●If the same MAC address already exists, the lower port is assigned.
●Aspire keysets with an IP adapter/Dterm phones and Aspire IP keysets do not support silent
suppression.
Assign Port/Extension Number
The extension port of an IP terminal is assigned by default starting with port 01. Use Program 84-03-09
to redefine this starting port number. The extension number for the port is set in Program 11-02.
Programming
➻11-02-01 : Extension Numbering
If the default extension number is not acceptable for an IP terminal, change the extension
number associated with the port number (port 1-512).
➻84-03-09 : NGT Information Basic Setup
Set the starting port number to be used for IP terminals (default: 1, entries 1-512).
Simultaneous Calls
Each VoIP PCB provides resources which can be used for IP calls. The 4VOIPU provides 4
resources, the 4VOIPDB provides 4, the 16VOIPU provides 16, and the 16VOIPDB provides 16
resources. An IP phone uses 1 channel resource. At the time of an extension call (IP phone to IP
phone), it is possible to create 16 telephone calls if a 16VOIPU and 16VOIPDB are used and are
not set peer-to-peer. If peer-to-peer is on, a call between Aspire IP phones (Aspire keyset with IP
adapter or Aspire IPhone) will not use a resource from the VOIP PCB.
Refer to CODEC Selection (page 668) for additional information on CODEC settings.
Because of the performance that would be experienced with the maximum number of calls, it is
necessary to restrict the number of maximum number of simultaneous calls with a combination of
the type and the number of CODEC frames. The table below indicates the performance level which
can be achieved with the various settings.
Use the charts on the following pages to view how the different types of settings restrict the num-
ber of simultaneous calls within that range.