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We use a Cisco 2811 router which is connected to the PSTN via ISDN PRI, and you might remember this question about that selfsame ISDN circuit.

We have licked all the trouble we had between ourselves and the phone company, and things have been functioning flawlessly. Thanks to the community here and Zypher particularly for pointing me in the right direction.

That said, my current issue is as follows: We have a pool of phone numbers we use for customer service contact, and from time to time based on business requirements we reconfigure those numbers' destinations. In this case, we are taking over a (troubled) branch office from corporate, and sending a (very lucky!) individual into the field with his wits, a cell phone, and a laptop. He will be personally handling clients for a couple weeks, etc. etc. Business requirements dictate that I take incoming calls on the ISDN for 555-2481 and send them out to a cell phone, 555-4666. Both numbers in the same area code. I have call forwards out to on-call phones set up in the Unity Express AA module, but in this case I am just sending the call to a cell phone as it comes in via the voice translation-rule that governs call routing, so:

voice translation-rule 1
 rule 1 /5558888/ /8003/  /* Auto attendant */
 rule 2 /5552481/ /307/   /* On Call Cell  */
 rule 3 /5554899/ /437/   /* CS ring group */
 rule 4 /5556166/ /8011/  /* Fax line  */

Rule 2 is the one governing the behavior I want; if a call is received on the PRI for number 555-2481, then translate the number to 307. That ephone-dn is as follows:

ephone-dn  76
 number 307
 label Easton cell
 call-forward all 92125554666
 hold-alert 30 originator

So, dialing 307 forwards to 9 (outgoing) 212-555-4666. Dialing 307 from an IP phone in the building results in immediate connection, as does forwarding to 307 via the Unity Express. I have turned on ISDN Q931 debugging and ISDN standard debugging to watch the calls go through, and the only difference I can detect is that when I place the calls, some of them go through, particularly to a test cell, 555-7611. When I make the same call to 212-555-2481 from my cell, however, I get a half-ring and then fast busy, and the message

Progress Ind i = 0x848A - Delay in response at called interface

Seems to appear in the log files on the call that fails. I know this is an ISDN message, and I found a great guide to those codes here. But this one doesn't seem to be there. The description is clear enough, but is there something I should be doing on this end or is it a problem with the cell phone or carrier?

I have a log file capturing what happens when a call comes in on the number:

Feb 23 09:24:15 centre 62728: 060331: Feb 23 14:24:15.896: ISDN Se0/0/0:23 Q931: RX <- SETUP pd = 8  callref = 0x3D87 
Feb 23 09:24:15 centre 62729:   Bearer Capability i = 0x8090A2 
Feb 23 09:24:15 centre 62730:       Standard = CCITT 
Feb 23 09:24:15 centre 62731:       Transfer Capability = Speech  
Feb 23 09:24:15 centre 62732:       Transfer Mode = Circuit 
Feb 23 09:24:15 centre 62733:       Transfer Rate = 64 kbit/s 
Feb 23 09:24:15 centre 62734:   Channel ID i = 0xA98382 
Feb 23 09:24:15 centre 62735:       Exclusive, Channel 2 
Feb 23 09:24:15 centre 62736:   Progress Ind i = 0x8483 - Origination address is non-ISDN  
Feb 23 09:24:15 centre 62737:   Calling Party Number i = 0x2183, '2125556385' 
Feb 23 09:24:15 centre 62738:       Plan:ISDN, Type:National 
Feb 23 09:24:15 centre 62739:   Called Party Number i = 0xC1, '5552481' 
Feb 23 09:24:15 centre 62740:       Plan:ISDN, Type:Subscriber(local)
Feb 23 09:24:15 centre 62741: 060332: Feb 23 14:24:15.900: ISDN Se0/0/0:23 Q931: Received SETUP  callref = 0xBD87 callID = 0x0E9C switch = primary-ni interface = User 
Feb 23 09:24:15 centre 62742: 060333: Feb 23 14:24:15.920: ISDN Se0/0/0:23 SERROR: isdn_get_name_from_gtd: false ret
Feb 23 09:24:15 centre 62743: 060334: Feb 23 14:24:15.920: ISDN Se0/0/0:23 SERROR: process_pri_simple: NO name in GTD 
Feb 23 09:24:15 centre 62744: 060335: Feb 23 14:24:15.924: ISDN Se0/0/0:23 Q931: TX -> CALL_PROC pd = 8  callref = 0xBD87 
Feb 23 09:24:15 centre 62745:   Channel ID i = 0xA98382 
Feb 23 09:24:15 centre 62746:       Exclusive, Channel 2
Feb 23 09:24:15 centre 62747: 060336: Feb 23 14:24:15.936: ISDN Se0/0/0:23 Q931: pak_private_number: Invalid type/plan 0x4 0x1 may be overriden; sw-type 13
Feb 23 09:24:15 centre 62748: 060337: Feb 23 14:24:15.936: ISDN Se0/0/0:23 Q931: Sending SETUP  callref = 0x1F23 callID = 0x8828 switch = primary-ni interface = User 
Feb 23 09:24:16 centre 62749: 060338: Feb 23 14:24:15.940: ISDN Se0/0/0:23 Q931: TX -> SETUP pd = 8  callref = 0x1F23 
Feb 23 09:24:16 centre 62750:   Bearer Capability i = 0x8090A2 
Feb 23 09:24:16 centre 62751:       Standard = CCITT 
Feb 23 09:24:16 centre 62752:       Transfer Capability = Speech  
Feb 23 09:24:16 centre 62753:       Transfer Mode = Circuit 
Feb 23 09:24:16 centre 62754:       Transfer Rate = 64 kbit/s 
Feb 23 09:24:16 centre 62755:   Channel ID i = 0xA98397 
Feb 23 09:24:16 centre 62756:       Exclusive, Channel 23 
Feb 23 09:24:16 centre 62757:   Progress Ind i = 0x8483 - Origination address is non-ISDN  
Feb 23 09:24:16 centre 62758:   Calling Party Number i = 0x2183, '2125556385' 
Feb 23 09:24:16 centre 62759:       Plan:ISDN, Type:National 
Feb 23 09:24:16 centre 62760:   Called Party Number i = 0xA1, '2125554666' 
Feb 23 09:24:16 centre 62761:       Plan:ISDN, Type:National 
Feb 23 09:24:16 centre 62762:   Redirecting Number i = 0x00008F, '307' 
Feb 23 09:24:16 centre 62763:       Plan:Unknown, Type:Unknown
Feb 23 09:24:17 centre 62764: 060339: Feb 23 14:24:16.120: ISDN Se0/0/0:23 Q931: RX <- CALL_PROC pd = 8  callref = 0x9F23 
Feb 23 09:24:17 centre 62765:   Channel ID i = 0xA98397 
Feb 23 09:24:17 centre 62766:       Exclusive, Channel 23
Feb 23 09:24:22 centre 62767: 060340: Feb 23 14:24:22.000: ISDN Se0/0/0:23 Q931: RX <- PROGRESS pd = 8  callref = 0x9F23 
Feb 23 09:24:22 centre 62768:   Progress Ind i = 0x8488 - In-band info or appropriate now available  
Feb 23 09:24:22 centre 62769:   Progress Ind i = 0x848A - Delay in response at called interface 
Feb 23 09:24:22 centre 62770: 060341: Feb 23 14:24:22.008: ISDN Se0/0/0:23 SERROR: process_pri_simple: NO name in GTD 
Feb 23 09:24:22 centre 62771: 060342: Feb 23 14:24:22.008: ISDN Se0/0/0:23 Q931: TX -> PROGRESS pd = 8  callref = 0xBD87 
Feb 23 09:24:22 centre 62772:   Progress Ind i = 0x8488 - In-band info or appropriate now available  
Feb 23 09:24:22 centre 62773:   Progress Ind i = 0x848A - Delay in response at called interface 
Feb 23 09:24:23 centre 62774: 060343: Feb 23 14:24:22.780: ISDN Se0/0/0:23 Q931: RX <- PROGRESS pd = 8  callref = 0x9F23 
Feb 23 09:24:23 centre 62775:   Progress Ind i = 0x8488 - In-band info or appropriate now available 
Feb 23 09:24:23 centre 62776: 060344: Feb 23 14:24:22.784: ISDN Se0/0/0:23 SERROR: process_pri_simple: NO name in GTD 
Feb 23 09:24:23 centre 62777: 060345: Feb 23 14:24:22.784: ISDN Se0/0/0:23 Q931: TX -> PROGRESS pd = 8  callref = 0xBD87 
Feb 23 09:24:23 centre 62778:   Progress Ind i = 0x8488 - In-band info or appropriate now available 
Feb 23 09:24:23 centre 62779: 060346: Feb 23 14:24:23.092: ISDN Se0/0/0:23 Q931: RX <- DISCONNECT pd = 8  callref = 0x3D87 
Feb 23 09:24:23 centre 62780:   Cause i = 0x82A9 - Temporary failure
Feb 23 09:24:23 centre 62781: 060347: Feb 23 14:24:23.096: ISDN Se0/0/0:23 Q931: TX -> RELEASE pd = 8  callref = 0xBD87
Feb 23 09:24:23 centre 62782: 060348: Feb 23 14:24:23.104: ISDN Se0/0/0:23 Q931: TX -> DISCONNECT pd = 8  callref = 0x1F23 
Feb 23 09:24:23 centre 62783:   Cause i = 0x80A9 - Temporary failure
Feb 23 09:24:23 centre 62784: 060349: Feb 23 14:24:23.112: ISDN Se0/0/0:23 Q931: RX <- RELEASE_COMP pd = 8  callref = 0x3D87
Feb 23 09:24:23 centre 62785: 060350: Feb 23 14:24:23.268: ISDN Se0/0/0:23 Q931: RX <- SETUP pd = 8  callref = 0x3D88 
Feb 23 09:24:23 centre 62786:   Bearer Capability i = 0x8090A2 
Feb 23 09:24:23 centre 62787:       Standard = CCITT 
Feb 23 09:24:23 centre 62788:       Transfer Capability = Speech  
Feb 23 09:24:23 centre 62789:       Transfer Mode = Circuit 
Feb 23 09:24:23 centre 62790:       Transfer Rate = 64 kbit/s 
Feb 23 09:24:23 centre 62791:   Channel ID i = 0xA98383 
Feb 23 09:24:23 centre 62792:       Exclusive, Channel 3 
Feb 23 09:24:23 centre 62793:   Progress Ind i = 0x8483 - Origination address is non-ISDN 
Feb 23 09:24:23 centre 62794:  
Feb 23 09:24:23 centre 62795:   Calling Party Number i = 0x2183, '2125556385' 
Feb 23 09:24:23 centre 62796:       Plan:ISDN, Type:National 
Feb 23 09:24:23 centre 62797:   Called Party Number i = 0xC1, '5552481' 
Feb 23 09:24:23 centre 62798:       Plan:ISDN, Type:Subscriber(local)
Feb 23 09:24:23 centre 62799: 060351: Feb 23 14:24:23.268: ISDN Se0/0/0:23 Q931: RX <- RELEASE pd = 8  callref = 0x9F23 
Feb 23 09:24:23 centre 62800:   Cause i = 0x80A9 - Temporary failure
Feb 23 09:24:23 centre 62801: 060352: Feb 23 14:24:23.272: ISDN Se0/0/0:23 Q931: Received SETUP  callref = 0xBD88 callID = 0x0E9D switch = primary-ni interface = User 
Feb 23 09:24:23 centre 62802: 060353: Feb 23 14:24:23.280: ISDN Se0/0/0:23 Q931: TX -> RELEASE_COMP pd = 8  callref = 0x1F23
Feb 23 09:24:23 centre 62803: 060354: Feb 23 14:24:23.300: ISDN Se0/0/0:23 SERROR: isdn_get_name_from_gtd: false ret
Feb 23 09:24:23 centre 62804: 060355: Feb 23 14:24:23.300: ISDN Se0/0/0:23 SERROR: process_pri_simple: NO name in GTD 
Feb 23 09:24:23 centre 62805: 060356: Feb 23 14:24:23.300: ISDN Se0/0/0:23 Q931: TX -> CALL_PROC pd = 8  callref = 0xBD88 
Feb 23 09:24:23 centre 62806:   Channel ID i = 0xA98383 
Feb 23 09:24:23 centre 62807:       Exclusive, Channel 3
Feb 23 09:24:23 centre 62808: 060357: Feb 23 14:24:23.316: ISDN Se0/0/0:23 Q931: pak_private_number: Invalid type/plan 0x4 0x1 may be overriden; sw-type 13
Feb 23 09:24:23 centre 62809: 060358: Feb 23 14:24:23.316: ISDN Se0/0/0:23 Q931: Sending SETUP  callref = 0x1F24 callID = 0x8829 switch = primary-ni interface = User 
Feb 23 09:24:23 centre 62810: 060359: Feb 23 14:24:23.320: ISDN Se0/0/0:23 Q931: TX -> SETUP pd = 8  callref = 0x1F24 
Feb 23 09:24:23 centre 62811:   Bearer Capability i = 0x8090A2 
Feb 23 09:24:23 centre 62812:       Standard = CCITT 
Feb 23 09:24:23 centre 62813:       Transfer Capability = Speech  
Feb 23 09:24:23 centre 62814:       Transfer Mode = Circuit 
Feb 23 09:24:23 centre 62815:       Transfer Rate = 64 kbit/s 
Feb 23 09:24:23 centre 62816:   Channel ID i = 0xA98397 
Feb 23 09:24:23 centre 62817:       Exclusive, Channel 23 
Feb 23 09:24:23 centre 62818:   Progress Ind i = 0x8483 - Origination address is non-ISDN  
Feb 23 09:24:23 centre 62819:   Calling Party Number i = 0x2183, '2125556385' 
Feb 23 09:24:23 centre 62820:       Plan:ISDN, Type:National 
Feb 23 09:24:23 centre 62821:   Called Party Number i = 0xA1, '2125554666' 
Feb 23 09:24:23 centre 62822:       Plan:ISDN, Type:National 
Feb 23 09:24:23 centre 62823:   Redirecting Number i = 0x00008F, '307' 
Feb 23 09:24:23 centre 62824:       Plan:Unknown, Type:Unknown
Feb 23 09:24:24 centre 62825: 060360: Feb 23 14:24:23.452: ISDN Se0/0/0:23 Q931: RX <- CALL_PROC pd = 8  callref = 0x9F24 
Feb 23 09:24:24 centre 62826:   Channel ID i = 0xA98397 
Feb 23 09:24:24 centre 62827:       Exclusive, Channel 23
Feb 23 09:24:30 centre 62828: 060361: Feb 23 14:24:29.332: ISDN Se0/0/0:23 Q931: RX <- PROGRESS pd = 8  callref = 0x9F24 
Feb 23 09:24:30 centre 62829:   Progress Ind i = 0x8488 - In-band info or appropriate now available  
Feb 23 09:24:30 centre 62830:   Progress Ind i = 0x848A - Delay in response at called interface 
Feb 23 09:24:30 centre 62831: 060362: Feb 23 14:24:29.340: ISDN Se0/0/0:23 SERROR: process_pri_simple: NO name in GTD 
Feb 23 09:24:30 centre 62832: 060363: Feb 23 14:24:29.340: ISDN Se0/0/0:23 Q931: TX -> PROGRESS pd = 8  callref = 0xBD88 
Feb 23 09:24:30 centre 62833:   Progress Ind i = 0x8488 - In-band info or appropriate now available  
Feb 23 09:24:30 centre 62834:   Progress Ind i = 0x848A - Delay in response at called interface 
Feb 23 09:24:30 centre 62835: 060364: Feb 23 14:24:30.292: ISDN Se0/0/0:23 Q931: RX <- PROGRESS pd = 8  callref = 0x9F24 
Feb 23 09:24:30 centre 62836:   Progress Ind i = 0x8488 - In-band info or appropriate now available 
Feb 23 09:24:30 centre 62837: 060365: Feb 23 14:24:30.296: ISDN Se0/0/0:23 SERROR: process_pri_simple: NO name in GTD 
Feb 23 09:24:30 centre 62838: 060366: Feb 23 14:24:30.296: ISDN Se0/0/0:23 Q931: TX -> PROGRESS pd = 8  callref = 0xBD88 
Feb 23 09:24:30 centre 62839:   Progress Ind i = 0x8488 - In-band info or appropriate now available 
Feb 23 09:24:30 centre 62840: 060367: Feb 23 14:24:30.640: ISDN Se0/0/0:23 Q931: RX <- DISCONNECT pd = 8  callref = 0x3D88 
Feb 23 09:24:30 centre 62841:   Cause i = 0x82A9 - Temporary failure
Feb 23 09:24:30 centre 62842: 060368: Feb 23 14:24:30.644: ISDN Se0/0/0:23 Q931: TX -> RELEASE pd = 8  callref = 0xBD88
Feb 23 09:24:31 centre 62843: 060369: Feb 23 14:24:30.652: ISDN Se0/0/0:23 Q931: TX -> DISCONNECT pd = 8  callref = 0x1F24 
Feb 23 09:24:31 centre 62844:   Cause i = 0x80A9 - Temporary failure
Feb 23 09:24:31 centre 62845: 060370: Feb 23 14:24:30.660: ISDN Se0/0/0:23 Q931: RX <- RELEASE_COMP pd = 8  callref = 0x3D88
Feb 23 09:24:31 centre 62846: 060371: Feb 23 14:24:30.772: ISDN Se0/0/0:23 Q931: RX <- RELEASE pd = 8  callref = 0x9F24 
Feb 23 09:24:31 centre 62847:   Cause i = 0x80A9 - Temporary failure
Feb 23 09:24:31 centre 62848: 060372: Feb 23 14:24:30.776: ISDN Se0/0/0:23 Q931: TX -> RELEASE_COMP pd = 8  callref = 0x1F24

This log represents about 20 seconds of time (by my cell phone, 212-555-6385) and I heard a long silence, a half ring, and then fast-busy. As soon as I heard the fast-busy, I hung up. I don't know what's normal or not normal here, so if I'm getting obvious errors, please let me know. Thanks very much.

share|improve this question
    
Interestingly, this may have been an issue with the cell phone carrier or perhaps the phone itself. The phone in this example is a Dash, on the T-Mobile network. Using a different destination phone on a different network (Sprint) connects correctly. Has anyone else experienced this? Could it be the GSM vs. CDMA? I don't have any AT&T phones to test that hypothesis. –  atroon Feb 24 '10 at 16:18

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