SIP trunk and call forwarded extensions

[davidfield]

Hello All,

My UC520 issues continue.  After much frustration and assistance I finally got my SIP trunk running and all appeared to be well.  Calls and DDI's were working great.  I though job done. However, another issue has popped up.

One of the staff was on leave and set their phone to Call forward to another internal extension.  Now when a SIP call comes in to that extension it wont forward and the caller gets no Audio.  I've been reading and believe a Media Termination Point may be needed.  Can anyone point me to a definative explination that may help me resolve?  I have attached my config if someone has some time to tell me what I'm missing.

Thanks in advance

Dave

[danplacek]

You said "won't forward" and "caller gets no audio" -- which is it? If the forwarding fails, my best guess would be caller-id issues (UC520 is sending caller's CID, which ITSP is rejecting since it is not a number you own). If it is audio issues... that could be many things; is this UC behind a firewall or NAT?

[davidfield]

Thanks for the reply Daniel,

The caller hears nothing.  You take the forward off and the desired internal extension gets the call and all ok.

I setup the following scenario

Currently 2805 forwarded to 2810

voice translation-rule 4

rule 1 /^02070787756/ /2805/

ephone-dn  80  octo-line

number 2805 no-reg primary

label HouseManager

description HouseMgr 2805

name House Manager

mobility

call-forward all 2810

When Call comes in on DDI 02070787756 I can see the SIP messages translation to 2810. But then it says service unavailable.

Regards

David

[danplacek]

Try:

voice service voip
 no supplementary-service sip moved-temporarily
 no supplementary-service sip refer

Please rate useful posts.

[davidfield]

Hi Daniel,

I tried your recommedation but no luck.  The impact of the above was it stopped DDI SIP calls also.

When I put it back to the original

voice service voip

ip address trusted list

ipv4 10.2.0.0 255.255.255.0

ipv4 88.215.61.0 255.255.255.0

ipv4 10.1.100.0 255.255.255.0

ipv4 10.1.37.0 255.255.255.0

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

allow-connections sip to sip

supplementary-service h450.12

fax protocol none

no fax-relay sg3-to-g3

sip

registrar server

no update-callerid

early-offer forced

midcall-signaling passthru

I get the SIP message with the diversion.

158501: 1w4d: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received:

INVITE sip:2810@10.44.1.254;user=phone SIP/2.0

Max-Forwards: 69

Session-Expires: 3600;refresher=uac

Min-SE: 600

Supported: timer, 100rel

To: <2810>

From: <07825372765>;tag=3568995155-523003

P-Asserted-Identity: <07825372765>

Call-ID: 711350-3568995155-523000@MSX28.gammatelecom.com

CSeq: 1 INVITE

Allow: CANCEL, ACK, INVITE, BYE, OPTIONS, REGISTER, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, UPDATE, MESSAGE, PUBLISH

Via: SIP/2.0/UDP 88.215.61.195:5060;branch=z9hG4bK3b6aa7d01afb2845ff14f2f6c6435a22

Contact: <07825372765>

Diversion: <2805>;reason=unconditional;counter=1

Content-Type: application/sdp

Accept: application/sdp