Nortel Networks 9150 - Manual (Page 249)

Remote Gateway 9150 Installation and Administration Guide 219
January 2005 Configuring the Remote Gateway 9150 unit
Scenario 4
All local inbound calls pass immediately to the host PBX and then are
“trombone” re-directed to the Remote Gateway 9150 units user’s primary PBX
DN key.
!
Disable DN Discovery. This forces the Remote Gateway 9150 unit to use
local DNs (non-PBX DNs) and does not replace the local DN with the
primary PBX DN.
!
Configure enough Bridge Ports to provide the desired level of call
blocking. For example, four inbound BRI calls forwarded to the host PBX
require four Bridge Ports.
ATTENTION!
This scenario creates tromboning on every call and uses
double DSP and bandwidth resources. Not only does this
trombone add additional delay but you MUST also ensure
that the DSP and bandwidth resources allow for this
situation. The duel encoding of voice calls causes further
degradation of voice quality, which can be unacceptable to
some users. Additionally, with DN Discovery disabled,
Local Switchover cannot be used. Therefore, all calls
within the Remote Gateway 9150 unit’s local office require
DSP and bandwidth resources.
host PBX
WAN or PSTN 9150
Local Configuration
on the 9150 ports
are set to non-PBX
dialing plan DNs.
RLC
BRI circuits alert
prime PBX DN 9150
telephone(s)
Voice
Mail
(8000)
Voice
Mail
(8000)
Voice Mail
System
Remote Gateway 9100 Series
Bandwidth Connectivity
9150
Bridge
Port(s)
9150
Bridge
Port(s)
1
3
2
PSTN caller gets voice
mail greeting from users
PBX DN mailbox
5
6
DN 3000
Tromboned call (Bridge
Port uses double
resources)
4
The call is
presented to the
9150 users primary
PBX DN key.
If the call is not answered
on the PBX, it receives
the same treatment as
any other call to that key.