POINT TO POINT / POINT TO
MULTIPOINT T0
APPLICATIONS
Ed. 042/4 Réf. 3EH 21000 BSAA
DYNAMIC TEI
This feature assigns a TEI automatically to each T0 bus (mainly assured by the public network on mul-
tipoint accesses).
At each connection and at each reset, (cold or warm), each T0 "asks" the network to allocate it a TEI;
this procedure is carried out by sending 2 level 2 messages: the "Identity Request" message sent by the
system to the network, then the "Identity Assigned" message sent by the network. The value assigned is
stored by the system until the next reset.
Possible TEI values (in accordance with ETS300 125)
- 0 to 63: fixed TEIs (values used on the system side)
- 64 to 126: automatic TEIs (values used on the network operator side)
- 127: value reserved for management operations
CONFIGURATION
T0 configured in Point to Point
T To define the management mode:
T For fixed TEI, assign a value between 0 and 63 inclusive:
T Configuring the installation number:
T Completing the substitution table (refer to the file concerning DDI with more than 4 digits in the
"System Features" section):
When changing from a digital access with fixed TEI management to automatic TEI manage-
ment, it is essential to perform a warm reset so that the PABX sends the TEI allocation re-
quest to the public exchange; if not, the TEI management on the system will be unstable.
By MMC-PM5 (Expert View), select: External Lines -> List of Accesses -> Details -> check o Fixed
TEI or o Auto TEI
By MMC-PM5 (Expert View), select: External Lines -> List of Accesses -> Details -> Value
- by MMC-PM5 (Expert View): Numbering -> Installation Number
-by MMC-Station: Global -> Ins Num -> Public
- by MMC-PM5 (Expert View): Numbering -> DDI Number Modification Table
-by MMC-Station: Num Pln -> PubNMT