User's Manual

SME VoIP System Guide, Version 1.5
Proprietary and Confidential
Chapter: Operation Setup – Bases/Handsets/SIP Sever
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16 Operation Setup – Bases/Handsets/SIP Sever
In this chapter, we describe the operation of the base unit and handsets during power up/down. Next we
describe the signal flow graphs for some selected operations of the system.
16.1 Power Up
Handset
The handset is still off after the battery has been put into the Handset. The user has to Long Key Press the
Red-key (On-hook key) to power up the handset.
If the handset is registered, it will start searching for a base and if the handset is in range of a base, then it
will location register to the base.
The handset will display “Unregistered” if the handset isn’t registered. If the handset is not registered, then
the user has to enable the registration mode on the base and afterwards register the handset by selecting
“Connectivity → Register→ <type in Access code> → *OK+” on the MMI of handset.
The handset supports connectionless handover between bases and inter-cell handover between a base and
repeaters.
Base Station
Power is supplied to the base (gateway) via PoE. The base will start operation when connected to the LAN
or WAN. The wireless handset must be registered to the base and a SIP proxy must be configured on the
base (refer to Chapter(s) 11,13 for details). The registration mode must be enabled to make it possible to
register a handset to the base. The registration mode is enabled on the base by accessing the web-interface
on the base. This is done by typing in the IP address of base in the browser on a computer connected to the
same network as the base. The user will be prompted for a user name and Password to access the web
interface on the base. The user selects an extension via the web interface and click “Register”. The base will
afterwards be open for registrations for 5 minutes.
Up to 40 bases can be “linked” together and synchronisation between the bases is done via the air and the
network. The base supports up to 10 SIP-proxies and 30 handsets.
16.2 Power Down
Handset
If the Handset loses battery or the battery level is less than a threshold that is in the EEPROM, it goes to
power down mode. A battery warning will be given before the handset power down.
Base Station
One of the bases will be a master base and another base will work as fall back base in case of power failure
on the master base. All handsets located on a base will be un-located in case of power down of the base. In
case of power failure on one of the bases, the user can move to another base area and the handset will
then locate on this base and be workable on the new base.