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New Member

Shared DN-Analog phone and IP Phone


I have a 7965 with extension 1077 and an Analog phone with the same extension.  IP phone works fine inbound and out, internal and external. Analog line can only call internal.  They have the same Partition and CSS etc.  When I dial from the analog phone I see the off-hook indicator turn red on the IP phone.  Only difference is that calls cannot complete when originating from the analog line.  Even when the analog phone hits Unity for VM the call drops as soon as Unity answers.  PSTN calls seem to disconnect as soon as they hit the gateway? Even if I dial the IP phone from the analog phone that sahre the DN the call rings but drops as soon as I answer.

DSP issues?

Thanks in advance!  All replies rated.

Hall of Fame Super Silver

Shared DN-Analog phone and IP Phone

Is the analog device configured as SCCP device?  I suppose so, you mention the CSS is the same as on the IP phone, make sure the CSS is the same on the device level and DN level.

As to calls dropping, is the sccp device configured in the same device pool as the IP Phone?


New Member

Shared DN-Analog phone and IP Phone

Yes on the SCCP.  Same CSS and Partition on the DN level.  Inbound calls CAN be answered on the analog though with normal 2 way audio.  same device pool too


Re: Shared DN-Analog phone and IP Phone


Are you sure that this is not an IP routing/connectivity issue for the SCCP gateway.

Can the PSTN voice gateway ping the SCCP gateway

Can the Unity server ping the SCCP gateway.

May be the signalling path SCCP Gateway to CUCM server is OK as you get the dial tone etc.



Regards, Alex. Please rate useful posts.