User's Manual

Feature dependencies and restrictions
The number of line keys on the IP Deskphone limits the number of accounts that you can
register
simultaneously. The IP Deskphone is limited to six accounts. Connecting an Expansion
Module to the IP Deskphone increases the limit by 18, allowing for 24 registered accounts.
Additional Expansion Modules do not increase the limit further.
These are hard limits. Further restrictions may be imposed by the administrative policy. See
Configuration on page 150
Performance characteristics
Because the multiuser feature can allow the IP Deskphone to have multiple users logged on
to the IP Deskphone at the same time, the chances of numerous multiple calls increase. The
IP Deskphone can handle five simultaneous incoming calls at a time without any noticeable
impact.
But as the number of simultaneous incoming calls increase, there is a noticeable delay
in ringing and updating the display to present all the calls to the user. It may take up to five
seconds for 10 simultaneous incoming calls, and this time increases as the IP Deskphone
receives more simultaneous incoming calls.
CS 1000: Several keys with the same DN on a TN
CS 1000 allows you to simultaneously make or receive a maximum of 2 calls. To overcome
this limitation you can configure several Multiple Call Ringing (MCR) keys with the same DN
on
one TN and register from the IP Deskphone to each configured key. This applies to systems
using Meridian Communications Adapter (MCA) – Multiple Appearance DN (MADN).
Each registration must have the same Login ID and Authentication ID. The first registration
maps to the lowest numbered DN key. Subsequent registrations are assigned DN keys in
ascending order of the key numbers.
The following example shows several MCR keys configured on the same DN, on one TN:
TN 100 0 0 1
UEXT/SIPL
With:
SIPU user1
SCPW xxxx
KEY 0 MCR 5000
KEY 1 HOT U xxxx
KEY 2 MCR 5000
KEY 3 MCR 5000
Multiuser
166 SIP Software for Avaya 1200 Series IP Deskphones-Administration September 2013
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