NEC SL1100, Networking Manual

Page: 140 / 292

Issue 6.0 NEC SL1100
9 - 6 IP Multiline Station (SIP)
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ECTION
4
P
EER
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TO
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EER
An IP telephone can send and receive RTP packets to or from another IP telephone
without using DSP resources on a VoIPDB. This operation supports only Intercom
calls between the IP telephones.
If a DR700 IP multiline telephone or trunk line is required, a DSP resource is needed
and a VoIPDB must be installed. If a conference call is initiated while on a peer-to-
peer call, the peer-to-peer connection is released and a new non peer-to-peer
connection is created using the VoIPDB. If the third party drops out of the
conversation, the call reverts to a peer-to-peer call. There is silence while this
conversion is made by the system.
Although the peer-to-peer feature is supported for IP Station-to-IP Station calls, the
NEC SL1100 KSU must still have a registered VoIPDB installed in the system.
With Barge-In, a short silence may occur if the following occurs:

Peer-To-Peer call receives a Barge-In without a Barge-In tone.

Peer-To-Peer call receives a Barge-In with Monitor mode.

Established Barge-In is disconnected.

The Peer-to-Peer feature is a programmable feature that may be enabled or
disabled by accessing Data Program 10-26-04 – DR700 Peer to Peer.
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ECTION
5
P
ROGRAMMING
The first step to connecting IP telephones to the NEC SL1100 system is to connect
the NEC SL1100 system to the customer data network. Refer to
Chapter 4 General
IP Configuration . Next, program the VoIPDB and associated IP telephone settings.
To complete the installation, program the IP telephone.
The programming commands required to complete this installation are located in
Programming . This section provides a brief description of the commonly used
commands:

10-12-03 CPU Network Setup - Default Gateway
If required, select the default gateway IP address to use when using a
router (default: 0.0.0.0).

10-12-09 CPU Network Setup - IP Address
Select the IP address for the IP connection

10-12-10 CPU Network Setup - Subnet Mask
Assign the subnet mask for the VoIPDB