Compatibility with CS 1000, BCM and BCM50 is dependent on interface with user’s Nortel IP Softphone 2050 R2.0 Maintenance Release 254.

The following features were tested:

    - Basic Call Features : Caller ID, DTMF (Voicemail interaction)
    - Split Control : Call Hold, Message Retrieval, Transfer, Conference
    - Peripheral Testing : FAX, Modem, External Lamp, TTY, Doorphone

The tests were performed on the following Nortel platforms:

    - Nortel Business Communications Manager (BCM) 200/400, Release 3.7
    - Nortel Communication Server 1000, Release 4.50W

    - Nortel Business Communications Manager (BCM) 200/400, Release 4.0 Compatible Product designation granted by technical review.

FAX support
    - T.38 fax is not supported in cases where IP trunks (SIP or H.323) are used
    - Due to the nature of test results, it is recommended that if FAX be used with the USB-ATA, that transmission speeds of 9600 bps or less be used, with ECM turned off, to improve the likelihood of a successful 1st transmission. Transmissions at 300 bps may be most reliable.

TTY support
    - Despite some instances of garbled text for both calling and called parties, it is possible to conduct an intelligible TTY conversation

MODEM support
    - Modem connectivity at 300 bps demonstrated the best reliability, in terms of staying connected, as well as noise on the connection.

Calling/Called Party Name Display:
    - Name display is not supported. Only numbers will be displayed

DTMF
    - Incoming DTMF was not successful when the USB-ATA is connected an a trunk on a PBX.

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