AudioCodes MediaPack 114 Manuel d'utilisateur télécharger pdf (Page 170)

SIP User's Manual 170 Document #: LTRT-65411

MediaPack Series

You can assign different Profiles (behavior) per call, using the call routing tables:

 'Tel to IP Routing' page (refer to ''Tel to IP Routing Table'' on page 160)

 'IP to Hunt Group Routing'

page (refer to ''IP to Trunk Group Routing'' on page 163),

In addition, you can associate different Profiles per the device's channels.

Each Profile contains a set of parameters such as coders, T.38 Relay, Voice and DTMF

Gain, Silence Suppression, Echo Canceler, RTP DiffServ, Current Disconnect and more.

The Profiles feature allows you to customize these parameters or turn them on or off, per

source or destination routing and/or per the device's endpoints (channels). For example,

specific ports can be assigned a Profile that always uses G.711.

Each call can be associated with one or two Profiles - Tel Profile and/or IP Profile. If both IP

and Tel profiles apply to the same call, the coders and other common parameters of the

preferred Profile (determined by the Preference option) are applied to that call. If the

Preference of the Tel and IP Profiles is identical, the Tel Profile parameters take

precedence.

Notes:

• The default values of the parameters in the 'Tel Profile Settings' and 'IP

Profile Settings' pages are identical to their default values in their

respective primary configuration page.

• If you modify a parameter in its primary configuration page (orini file) that

also appears in the profile pages, the parameter's new value is

automatically updated in the profile pages. However, once you modify

any parameter in the profile pages, modifications to parameters in the

primary configuration pages (orini file) no longer impact that profile

pages.

3.4.4.5.1 Coder Group Settings

The 'Coder Group Settings' page provides a table for defining up to four different coder

groups. These coder groups are used in the 'Tel Profile Settings' and 'IP Profile Settings'

pages to assign different coders to Profiles.

For each coder group you can define up to five coders, where the first coder (and its

attributes) in the table takes precedence over the second coder, and so on. The first coder

is the highest priority coder and is used by the device whenever possible. If the far end

device cannot use the coder assigned as the first coder, the device attempts to use the next

coder and so on. For a list of coders supported by the device, refer to ''Coders'' on page

123.

Notes:

• Each coder type can appear only once per Coder Group.

• The device always uses the packetization time requested by the remote

side for sending RTP packets. If not specified, the packetization time

(ptime) is assigned the default value.

• Only the packetization time of the first coder in the defined coder list is

declared in INVITE / 200 OK SDP, even if multiple coders are defined.

• For G.729, you can also select silence suppression without adaptations.

• If silence suppression is enabled for G.729, the device includes the string

'annexb=no' in the SDP of the relevant SIP messages. If silence

suppression is set to 'Enable w/o Adaptations', 'annexb=yes' is included.

An exception is when the remote device is a Cisco gateway

(IsCiscoSCEMode).

• You can also configure the coder groups using the ini file table parameter

CoderName (refer to ''SIP Configuration Parameters'' on page 260).

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AudioCodes MediaPack 114 Manuel d'utilisateur Page 170

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