Mitel MCD 6.0 User Manual download pdf (Page 8)

13-4940-00251 Commend SIP Doorphone

Device Limitations

This is a list of problems or not supported features when the Commend SIP Doorphone is

connected to the Mitel 3300 ICP.

Feature Problem Description

De-registration

Not supported. The Commend SIP Doorphone has no means on the

client to de-register.

Recommendation: Contact your local Commend reseller for further

details

All Call Features

The Commend SIP Doorphone has only a single call button to initiate

outbound calls to a pre-provisioned DN, and therefore cannot support

call features.

Recommendation: Contact your local Commend reseller for further

details

DTMF

For In-Band DTMF on SIP to SIP calls, you could hear the played

tones on the Commend SIP Doorphone, but the tones would not

activate the door relay.

Recommendation:

use RFC2833

Codec Support

The Commend 8028 does not support G729

Recommendation: Use G711 or G722 codec.

Resiliency

Not supported – The Commend Doorphone does not switch to

secondary MCD when the primary MCD is not available.

Recommendation: Contact your local Commend reseller for further

details

Miscellaneous

The Commend SIP Doorphone dos not support non-preferred

Provisionial Response (PRACK or no PRACK) and did not maintain

long calls through Session Timer resets (neither UPDATE nor re-

INVITE).

Recommendation: Contact your local Commend reseller for further

details

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Mitel MCD 6.0 User Manual Page 8