Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 323
application
Syntax application {broadcast | teleprotection | vcb | vcb-branch-initiate}
Context config>card>mda>vcb
Description This command specifies the operating mode for the VCB application. The mode is set at the
card level and applies to all bridges configured on the card.
Default vcb
Parameters broadcast — only one branch on the bridge (fixed as branch 1) has control of the bridge
to transmit, and all other branches are in listen-only mode
teleprotection — each teleprotection relay transmits state information on discrete
frequencies so that each relay can both hear what the other relays are transmitting
as well as transmit its own information to the other relays
vcb — one branch talks and all other branches on the bridge can hear
vcb-branch-initiate — branches on the bridge are only enabled (unmuted) when the
attached base station signals its presence by grounding the M-lead on the interface
connected to the bridge. Upon receiving the grounded M-lead via T1/E1 ABCD bits
or TDM PW signaling, the bridge unmutes the associated branch. When the ground
is removed, the branch is muted again.
voice
Syntax voice
Context config>card>mda
Description This command enables the context to configure voice parameters on the 6-port E&M Adapter
card, 8-port Voice & Teleprotection card, 8-port FXO Adapter card, 6-port FXS Adapter card,
and Integrated Services card (when it is configured for VCB with the mda-mode command).
Default n/a
companding-law
Syntax companding-law {a-law | mu-law}
Context config>card>mda>voice
Description This command specifies the companding law to be used on the 6-port E&M Adapter card,
8-port Voice & Teleprotection card, 8-port FXO Adapter card, 6-port FXS Adapter card, and
Integrated Services card (for VCB).
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