Panasonic KX-NS1000 User Manual page 446

5.2.2 SIP (Session Initiation Protocol) Extension
For example, in the following figure if the S-PS is registered to the PBX, it can roam between SIP-CS (A)
and SIP-CS (B) because they both use the PBX as their SIP server.
PBX
SIP-CS (A)
•
If the SIP-CS is configured to use the Automatic Rerouting to Secondary PBX feature (® 4.2.3.2 Automatic
Rerouting to Secondary PBX), it is recommended that the CS's NTP server setting be set to an NTP server
other than the Master unit. If the Master unit goes offline and then the CS is reset, the accuracy of the
CS's clock cannot be guaranteed.
•
DSP Resource Usage
Making a call from a PS requires a certain number of DSP resources, depending on the codec used. If all
DSP resources are in use, this operation cannot be performed. To ensure a minimum level of performance,
DSP resources can be reserved for VoIP communication. (® 5.5.4 DSP Resource Usage)
[S-PS Broadcast Call]
Note
For the following conditions, "ICD group" refers to an ICD group that is configured to distribute calls to
SIP-CSs. These conditions do not necessarily apply to ICD groups in general.
•
It is possible to specify extensions other than SIP-CSs as ICD group members.
•
If there is an incoming call at an ICD group and a new incoming call arrives at the same ICD group, the
new call will be placed in the group's queue. (® 2.2.2.4 Queuing Feature)
•
If there is an incoming call at an ICD group and a new incoming call arrives at a different ICD group, up to
1 call can be queued at the SIP-CS.
•
If an S-PS is receiving an incoming broadcast call but then receives an individual call (a call directly to its
extension number), the individual call will be given precedence.
•
If an S-PS is receiving an incoming broadcast call but then receives a group call from an ICD group of
which the S-PS is a member, the group call will be given precedence.
•
A supervisor extension in the ICD group can control the log-in/log-out status of a SIP-CS in the group.
However, a SIP-CS cannot change its own log-in/log-out status. (® 2.2.2.8 Supervisory Feature,
® 2.2.2.7 Log-in/Log-out)
•
Automatic Log-out does not apply to SIP-CSs. (® 2.2.2.7 Log-in/Log-out)
•
A supervisor extension in the ICD group cannot control the wrap-up status of a SIP-CS in the group, nor
can a SIP-CS change its own wrap-up status.
•
A Wrap-up button configured on an S-PS controls the PS's wrap-up status. It cannot be used to control a
SIP-CS's wrap-up status.
446 Feature Guide
IP Network
VPN
Router
Roaming
Router
SIP-CS (B)
: SIP server connection
: LAN