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techguy
Enthusiast

incoming is ok but outgoing is not working

One starnge problem, inbound calls are working but outbound calls from CUCM is not ok. PSTN Lines (FXO) are ok, as i have tested by analogue phone.

Following is the error.

QADHLNR0012901#sh voice iec description 1.1.278.5.88.0

    IEC Version: 1

    Entity: 1 (Gateway)

    Category: 278 (Media Negotiation Failure due to non-existing Codec)

    Subsystem: 5 (H323)

    Error: 88 (Fast codec mismatch)

    Diagnostic Code: 0

1 ACCEPTED SOLUTION

Accepted Solutions
acampbell
Advocate

Hi,

Looks like you are failing due to H323 FastStart

On the CUCM page for the H323 gatway look at the OUTGOING CALLS section.

Have you selected "Enable Outbound Faststart" , have you selected the correct codec for Faststart.

You could just try unticking the Faststart and retest.

Regards,
Alex.
Please rate useful posts.

Regards, Alex. Please rate useful posts.

View solution in original post

1 REPLY 1
acampbell
Advocate

Hi,

Looks like you are failing due to H323 FastStart

On the CUCM page for the H323 gatway look at the OUTGOING CALLS section.

Have you selected "Enable Outbound Faststart" , have you selected the correct codec for Faststart.

You could just try unticking the Faststart and retest.

Regards,
Alex.
Please rate useful posts.

Regards, Alex. Please rate useful posts.
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