Nortel Networks 9150 - Manual (Page 283)

Remote Gateway 9150 Installation and Administration Guide 253
January 2005 Configuring the Remote Gateway 9150 unit
Call appearance keys
The host call appearance key is defined for each station on the host PBX. It is
not defined for each station on the Remote Gateway 9150 unit.
The local call appearance keys, on the other hand, must be defined for each
station connected to the Remote Gateway 9150 unit to allow:
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users to place outgoing calls using Remote Gateway 9150 trunks
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users to place station-to-station calls without host PBX control
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incoming calls on Remote Gateway 9150 trunks to ring specific stations
The local call appearance keys must be left undefined in the host PBX
configuration to avoid indicator conflicts between the host PBX and the Remote
Gateway 9150 unit. Only indicators defined as local call appearances are
blocked from the host PBX.
Any active Single Call Ringing (SCR)/Single Call No-ringing (SCN) key causes
the Remote Gateway 9100 Series unit to allocate DSP and WAN bandwidth for
that port. This supports a privacy over-ride feature available with the SCR/SCN
key. To avoid using unnecessary bandwidth, Nortel recommends that you use
Multiple Call Ringing (MCR)/Multiple Call No-ringing (MCN) keys for
Multiple Appearance Directory Number (MADN) appearances at remote sites.
When to configure the local call appearance keys
The local call appearance key positions must be defined when a new station is
being configured with local capability, or when a request to change feature key
positions has been initiated.
Dial tone delay
Telephone sets connected to Remote Gateway 9150 units can experience
unexpectedly long dial tone delay. Specific delays depend on the number of
associated MADN appearances and the system activity at the time the call is
attempted. If you configure more than five to six MADNs on a single Remote
Gateway 9100 Series system, the signaling can become delayed and result in
sporadic ringing.
Note: This applies to all SCR, SCN, MCR, and MCN keys.