User Manual

OpenMobility SIP Installation, Administration and Maintenance
Aastra DeTeWe Doc-ID: pm-0504 28.11.2006 Page: 6 (52)
time slots each)
• Doubling the number of time slots (to 24) using the
TDMA process
• Net data rate per channel of 32 kbps
(for voice transmission using ADPCM)
• Voice coding using the ADPCM method
• Maximum transmission power of 10 mW
GAP Generic Access Profile
• GAP is the abbreviation for Generic Access Profile
• The GAP standard (ETS 300 444) is based on the
same technology as DECT, but is limited to the most
important basic features. This standard was created in
order to allow telephones of different vendors to be
used on any type of DECT system. It thus represents
the smallest common denominator of all manufacturer-
specific variants of the DECT standard.
• An important limitation in the GAP standard is that
external handover is not possible. For this reason
connection handover is used, which is supported by
GAP terminals.
• The operation of GAP-capable telephones is
comparable to that of analogue terminals. For
example, features can be called up via ‘*’ and ‘#’
procedures.
Handover Handover
A handover is similar to roaming, but occurs during an
ongoing call. A handover normally takes place “in the
background”, without disrupting the call (seamless
handover).
IPEI International Portable Equipment Identity
• 13-digit identification code for PPs
• Example: 00019 0592015 3
(the final digit is the checksum).
• The code is represented in decimal form.
• This code is globally unique.
PARK Portable Access Rights Key
Access code for the Portable Part. This code determines
whether a PP can access a particular DECT system. Used
for unique selection of the system at enrolment.
Roaming Roaming
While in motion, the PP performs ongoing measurements