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New Member

call forwarding on qsig

Hi I am having a problem with forwarding a phone to voice mail over leased line.I have 2 2600's each with qsig connection to pbx.when a phone is forwarded over the leased line from one end to the other it only works 50% of the time ie. when it doesn't work it seems the phone just rings out and never goes to voicemail.I have looked at q931 debugs and for a good and bad call both debugs look identical.Also when there is success I notice that more than 1 isdn channel is being brought up.For it to work it seems to need 4 channels which seems crazy.My signaling config is as follows.interface Serial1/0:15

no ip address

no logging event link-status

isdn switch-type primary-qsig

isdn protocol-emulate network

isdn incoming-voice voice

isdn bchan-number-order ascending

fair-queue 64 256 0

no cdp enable

is there any tweeking I can do to rectify this situation or is there an inherant problem with the amount of channels being seen as busy by the pbx for a successful forwarding to voicemail?Another thing is that it works every time when calling the ddi number which is forwarded over leased line to voicemail.Any opinions appreciated thanks!

  • Voice over IP
2 REPLIES
Cisco Employee

Re: call forwarding on qsig

Hi

Can you get a debug ISDN q931 for the same call from both routers for the same call please.

The Cisco router should pass this information in a Facility Message over the network. So if this message is the same at both ends then you need to get the PABX engineers involved.

Colin

New Member

Re: call forwarding on qsig

Hi thanks for taking a look. Here are the debugs you asked for.They aren't totally complete but the bit you want should be in there.

***********************

4w1d: Bearer Capability i = 0x8090A3

4w1d: Channel ID i = 0xA98381

4w1d: Calling Party Number i = 0x49, 0x80, '545', Plan:Private, Type:Subscriber(local)

4w1d: Called Party Number i = 0x80, '567', Plan:Unknown, Type:Unknown

4w1d: ISDN Se1/0:15: RX <- CALL_PROC pd = 8 callref = 0x8C54

4w1d: Channel ID i = 0xA98381

4w1d: ISDN Se1/0:15: RX <- ALERTING pd = 8 callref = 0x8C54

4w1d: Facility i = 0x9FAA068001008201008B0100A124020207B4020101301B8400A51706052B0C024E01300E8004313238380A01040403353637

4w1d: ISDN Se1/0:15: RX <- FACILITY pd = 8 callref = 0x8C54

4w1d: Facility i = 0x9FAA068001008201008B0100A124020207B506052B0C024E0130178004313131310A0105040C2A3230332A42452A35343623

4w1d: ISDN Se1/0:15: RX <- FACILITY pd = 8 callref = 0x8C54

4w1d: Facility i = 0x9FAA068001008201008B0102A137020207B6020113302E0A010330058003353436020101400504038090A3A108A006800431323334820102A4028100A607A0058003353637

******************************

4w2d: ISDN Se1/0:15: RX <- SETUP pd = 8 callref = 0x0025

4w2d: Bearer Capability i = 0x8090A3

4w2d: Channel ID i = 0xA98381

4w2d: Calling Party Number i = 0x49, 0x80, '545', Plan:Private, Type:Subscriber(local)

4w2d: Called Party Number i = 0x80, '567', Plan:Unknown, Type:Unknown

4w2d: ISDN Se1/0:15: TX -> CALL_PROC pd = 8 callref = 0x8025

4w2d: Channel ID i = 0xA98381

4w2d: ISDN Se1/0:15: TX -> ALERTING pd = 8 callref = 0x8025

4w2d: Facility i = 0x9FAA068001008201008B0100A124020207B4020101301B8400A51706052B0C024E01300E8004313238380A01040403353637

4w2d: Progress Ind i = 0x8188 - In-band info or appropriate now available

4w2d: ISDN Se1/0:15: TX -> FACILITY pd = 8 callref = 0x8025

4w2d: Facility i = 0x9FAA068001008201008B0100A124020207B506052B0C024E0130178004313131310A0105040C2A3230332A42452A35343623

4w2d: ISDN Se1/0:15: TX -> FACILITY pd = 8 callref = 0x8025

4w2d: Facility i = 0x9FAA068001008201008B0102A137020207B6020113302E0A010330058003353436020101400504038090A3A108A006800431323334820102A4028100A607A0058003353637

4w2d: ISDN Se1/0:15: RX <- FACILITY pd = 8 callref = 0x0025

4w2d: Facility i = 0x9FAA06800100820100A20B020207B630050201130500

4w2d: ISDN Se1/0:15: RX <- DISCONNECT pd = 8 callref = 0x0025

4w2d: Cause i = 0x8090 - Normal call clearing

4w2d: ISDN Se1/0:15: TX -> RELEASE pd = 8 callref = 0x8025

4w2d: ISDN Se1/0:15: RX <- RELEASE_COMP pd = 8 callref = 0x0025~

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