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UC 560 night-service problems

Dear all,

I have some problems involving night-service on an UC560. The unit is located in Germany.

The UC has a SIP-TRUNK to our ISP, with an allocated Direct Dial-In extension-block ( -10 till -29) and a primary number (-0)

Outgoing calls are routed to the SIP-Trunk via a CORlist, as the BRI-Ports of the unit are used by an associated company.

Two Phones are configured for night-service call-forwarding to external numbers (cellphones) and a separate dial-peer is used for this purpose:

dial-peer voice 1047 voip

corlist outgoing call-Business1

description **CCA*Germany*Mobile*Night*Service*

translation-profile outgoing PSTN_Outgoing_NightService

preference 2

destination-pattern 601[567].T

session protocol sipv2

session target sip-server

voice-class codec 1 

voice-class sip dtmf-relay force rtp-nte

dtmf-relay rtp-nte

ip qos dscp cs5 media

ip qos dscp cs4 signaling

no vad

The regular Dial-peers are identical, with the exception that the access-code in the destination pattern is "0" rather than 6.

I am now seeing two issues:

1) When forwarding a call, the outgoing number is randomly picked by the UC; usually they will originate from extensions outside of our number-block ( -76 for example)

2) When our managers try to answer such forwarded calls, the UC is unable to establish the call. The managers as well as the inbound caller just get a silenced line.

Is there any way to resolve this issue and make the UC bind the -0 extension for outbound call forwards?

Thank you very much!

Best regards and happy holidays!

- Colin

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