User manual

68 Manual for Flashman II

User Mode

In User Mode the front panel menu tree is simplified.

g) Timeouts

Here the following timeouts can be set:

Disconnect:

This timeout defines the period (in seconds) after which a connection is

dropped if no valid framing is achieved. Ideally, it should be set higher than

the Stat. framing timeout value.

Its default value is 45 seconds.

Note:You can enter values other than those shown, but the maximum

possible value is 9,999 seconds.

Stat. framing (usually have no meaning at IP transmissions)

This timeout defines the period (in seconds) after which FLASHMAN II

switches automatically to G.722 SRT coding at non-IP-transmissions.

Remote control

This timeout defines the period (in seconds) after which an idle IP remote

control session is closed automatically. The default value is 100 seconds.

Note:

This timeout can be helpful if a remote session was interrupted by the

network (e.g. faulty switch) and new remote control attempts are blocked by

FLASHMAN II since it is 'convinced' it is still remote controlled (but it isn't).

AJC

The feature AJC (= Automatic Jitter Compensation) provides an automatic

adaptation of the IP transmission to network capabilities when using the

interfaces Ethernet, 3G or WLAN (future option).The AJC optimizes the

following parameters at:

Encoder side:

The information provided by the peer via RTCP is used for evaluating the

network capabilities.

If applicable the packet size is increased first, to improve the transmission.

Please keep in mind that a bigger packet size results in less IP overhead. If

increasing packet size does not lead to satisfactory results then secondly the

encoder bit rate will be reduced automatically.

Decoder side

If necessary the audio delay is increased to adapt the transmission to given

network conditions.

Increasing the audio delay is achieved by increasing the receive buffer.

Note:

For both encoder and decoder the following parameters can be set

independently:

a) mode: AJC is switched on or off. (default: on)

b) period: Set evaluation time (by default 30 seconds)