Sip Dect Capacity Limitations - Avaya CS 1000 Fundamentals

A user can call the CallPilot system from a DECT Handset and log on to the voice mailbox with
the corresponding DN and password. The user can then use the voice menus of the system
as usual.
Note:
If a voice mail number contains a login (DN) and password for accessing the mailbox, then
the 4027, 4070 and 4075 DECT Handsets send digits to the voice mail system at a rate of
40 msec (for RTP stream only). To recognize the password and login correctly, your voice
mail system must support this rate
The system can send MWI to the DECT Handset through the SIP Trunk; you can enter the
MWI primary DN of the SIP DECT user.
CS 1000 supports only the Unsolicited MWI NOTIFY model. An external SIP UA cannot
SUBSCRIBE to MWI NOTIFY messages and cannot request the current status of MWI for the
DN from the system (by sending SUBSCRIBE messages). Instead, a SIP UA must be ready
to receive MWI NOTIFY messages from the system even if it did not SUBSCRIBE, and it must
update MWI according to those messages only.
If you use a twinned configuration for a DECT Handset, the corresponding IP Deskphone or
TDM telephone correctly reflects the current state of MWI, if it receives MWI notifications for
the Primary DN from CallPilot.

SIP DECT capacity limitations

The following capacity limitations apply to SIP DECT:
• a maximum of 12 simultaneous calls for each DAP
• a maximum of 256 DAPs on each network (where handover and synchronization between
DAPs is possible)
• a maximum of 6000 DECT Handsets on each SIP DECT system (potentially, several
isolated SIP DECT systems can connect to CS 1000)
• a maximum of 1000 simultaneous calls on each network
• a maximum of 25 subscription records for each DAP If the planned number of DECT
Handsets in a SIP DECT system is equal to M, and the number of DAPs in that system
is equal to N, M must be less than or equal to N*25.
SIP DECT Fundamentals
SIP DECT capacity limitations
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