Avaya 1230 - Configuration Flags for Busy Lamp Field

If BLF_ENABLE = YES , then use BLF_RESOURCE_LIST_URI to configure the Resource List URI.
You must use the URI provided by the proxy when you configure the user for BLF.
If BLF_ ENABLE = SCS|SIPX, the Resource List URI auto generates in the following format:
~~rl~C~<username>@<domain></domain></username>
BLF call pickup
The Call Pickup feature allows a user to pick up a call by pressing the corresponding speed dial key
when the indicator for a monitored line flashes. The IP Deskphone must send an INVITE with the
Replaces header. Target uri, call-id, to-tag and from tag in the Replaces header are taken from the
NOTIFY message. The Replaces header is specified in RFC 3891.
Use the MAX_BLFCALLS parameter to configure this feature. This parameter specifies the
maximum number of available BLF(picked up) calls on an IP Deskphone. The actual value of
MAX_BLFCALLS correlates with the value of MAX_APPEARANCE, which specifies the maximum
number of available calls of any type. MAX_BLFCALLS must always be less than or equal to
MAX_APPEARANCE. If initial value of the MAX_BLFCALLS parameter is greater than the value of
MAX_APPEARANCE, the value of the MAX_BLFCALLS parameter is forcibly reduced.
BLF Call Pickup is only supported for IP Office. Therefore, IP_OFFICE_ENABLE must equal YES for
Call Pickup to work.
Configuration flags for Busy Lamp Field
The provisioning must provide a configuration flag, containing relevant URI, to the IP Deskphone in
order to use the Busy Lamp Field (BLF).
The following table describes the configuration flags used to configure the BLF.
Table 63: BLF configuration commands
Configuration command Description
BLF_ENABLE Y/N/SCS/SIPX (default: N) Enables or disables the BLF.
When BLF_ENABLE has the SCS or SIPX value, the
BLF_RESOURCE_LIST_URI parameter is ignored
and the IP Deskphone autogenerates an URI of the
following format: ~~rl~C~<username>@<domain>
BLF_RESOURCE_LIST_URI <BLF URI> Configures the BLF resource list URI for the BLF
feature. <BLF URI> is the server-provided URI
used to subscribe to BLF notifications (for example,
blf-resource-list@as.avaya.com).
Features
198 SIP Software for Avaya 1200 Series IP Deskphones-Administration March 2015
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