User`s guide

4(14)
Datum/Date Rev
Dokumentnr/DocumentnrUppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved Kontr/Checked Tillhör/Referens-File/Reference
99-07-15 F
361/155 34-ASB 150 02 Uen
FACILITY DESCRIPTION
Faktaansvarig - Subject responsible
SIGNALLING PREREQUISITES
Type of line signalling
Signalling provided with the BTU-C
e.g.: Loop signalling
Signalling provided with the BTU-E
• E&M signalling
- Swedish E&M
- Continuous E&M, A-format
- Continuous E&M, D-format
- Discontinuous E&M
- American E&M
- Paging E&M signalling according to ESPA
for connection of paging equipment
• Tone signalling according CEPT L1 or
SSAC 15 A
The individual signal diagrams can be adapted for
several signal prerequisites. See RASC, command
group 17 for more information.
Type of register signalling
• Decadic dialling
• DTMF (Dual Tone Multi Frequency)
• MFC and MFE
OTHER APPLICATIONS
Interface for paging equipment
The BTU-E allows connection of paging equipment
with signalling according to ESPA standards (2-wire
speech connection including signalling for "paging in
progress“ and "paging equipment not present“). This
allows display and tone information for the calling user.
For more information see PAGING,
document 400/155 34-ASB 150 02 Uen.
Direct in-dialling
The printed board assembly BTU-C offers the HW
platform for certain types of DIRECT IN-DIALLING
(DID) from the public network.
More information see DIRECT IN-DIALLING,
document 162/155 34-ASB 150 02 Uen.
Capacity
Number of tie lines
The maximum number of trunk lines and tie lines in
ASB 150 02 is 60.
Number of routes
One ASB 150 02 exchange supports up to 250 routes.
Limitations
There are no limitations for analogue tie lines,
compared with analogue trunk lines.
The following features are Not supported by analogue
tie lines (via BTU-E and BTU-C).
• Diversion, follow-me and re-route to extensions
in inter-working exchanges is not supported.
(External diversion to parties defined in
abbreviated numbers is possible.)
• The A-number and the B-number are not
transmitted via analogue tie lines.
• The operator receives no other information on
the display than called or calling line number
when forwarding calls from interworking
exchanges.
• Sending messages to extensions in interworking
exchanges is not possible.
• An extension calling from another exchange can
receive VOICE INFORMATION only.