Configuring T1 Port to E1 Port for CESoPSN Bundles (CTP Menu)

date_range 23-Apr-24

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This topic describes how to configure CESoPSN bundle from T1 port to E1 port for T1/E1 interfaces.

To configure a T1 port to E1 port for CESoPSN bundles using the CTP Menu:

From the Main Menu, select 1) Bundle Operations.
Select 3) CESoPSN.
Select a bundle from the list.
If you select an active bundle, you are prompted to disable the bundle before configuring it.
Select 3) Port Config.
Follow the onscreen instructions, and configure the options as described in Table 1 .

To make the CESOPSN bundle running keep the Timeslot same in both T1 and E1 side to 24 slots. The following example shows the procedure to configure CESoPSN bundle from T1 port to E1 port.

Note:

Starting from CTPOS Release 9.1R6, hairpin and remote CESoPSN bundle from T1 interface to E1 interface is supported with signaling off.

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DUT-1
====
[root@ctp_89:~ 10]# sc

Card Type      S/N  PCA      PLD     FPGA  VCXO_r*  VCXO_c* SCC WPR RTM
==============================================================================
   0 T1E1 EAAX8864    1      ---   0x0009       80     2048   0   0 HUB
   1 SERL EAAX8978    0      ---   0x0004       80     2048   8 --- ---
   3 SERL 00006838    3   0x0104   0x001f       78     1861  24 --- ---
   4 T1E1 00000874    1   0x0005   0x0032       75     1899  32   0 ---
   5 SERL 05112007    3   0x0104   0x001f       80     1468  40 --- ---
==============================================================================

Remote CESoPSN bundle----

[root@ctp_89:~ 11]# sb

>>>>> Circuit Emulation Bundles <<<<<
Bndl BndlTyp    Port      TS         RemAddr     CID    LCID RunState RCtr
==========================================================================
   0 CESoPSN  te-0/0    1-24  10.216.118.149    1000     N/A  RUNNING    0
==========================================================================
Checked out PPS - All Bundles: 200, System Maximum: 12500
   (1 PPS = full duplex packet transfer, Bundle <---> IP network)
[root@ctp_89:~ 12]# 
[root@ctp_89:~ 30]# qb 0


########### Bundle 0 type  CESoPSN ############
----- Port te-0/0 Database -----
Port Desc:
Port Type:           T1
Line Coding:         B8ZS
Port Frame:          Framed
Framing:             ESF
Clock Config:        CTP is Clock Source
BuildOut:            ~133 ft
Signaling:           Off
########## Port te-0/0 Runtime Config ##########
Port Desc:
Serial Loop:         To NET
T1E1 flags:          No_Alarm

--------- Bundle 0 Config ---------
DBase State:         ACTIVE
TimeSlots:           1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Remote Addr:         10.216.118.149
Source UDP Port:     1000
Hairpin Rem UDP port:0
Packet size:         960
IP Hdr TOS:          0 (decimal)
IP Hdr TTL:          255 (decimal)
Buf Max/Set/Min(ms): 15.000/10.000/5.000
Bndl Desc:
Adaptive Primary:     NO
Bndl Config Flags:   ---
Bundle Signaling:    Off

--------- Bundle 0 State ----------
Runtime State:      RUNNING

Checked out PPS:     Bndl: 200, All Bndl: 600, Sys Max: 12500

--------- Bundle 0 Counters -------
I/F bound packets:   152496
NET bound packets:   152498
LOF Occurence:       0
Late pkts:           0
Missing pkts:        0
Buffer restarts:     0
Buffer underflows:   0
Buffer overflows:    0
Buffer starves:      0
Buffer max samples:  200
Buff Max/Avg/Min:    10.18/9.93/9.82
Buff Last Minute:    10.24/9.93/9.84
Last counter clear:  0wk, 0d, 0h, 12m, 43s
[root@ctp_89:~ 31]# 
[root@ctp_89:~ 31]# t
May  4 05:36:08 ctp_89 ctpd: 7 ctp_timer_proc_t1card: te-0/0  T1/E1 LOF state changed to 0#012
May  4 05:37:27 ctp_89 ctpd: 9      util_prt_bsc:  B0 St Chg: InSYNC to RUNNING
May  4 05:38:08 ctp_89 kernel:EXT4-fs (sdb5): warning: maximal mount count reached, running e2fsck is recommended
May  4 05:38:09 ctp_89 kernel:EXT4-fs (sdb5): re-mounted. Opts: (null)
May  4 05:38:17 ctp_89 kernel:EXT4-fs (sdb5): re-mounted. Opts: (null)

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DUT-2
=====
[root@ctp_149:~ 10]# sc

Card Type      S/N  PCA      PLD     FPGA  VCXO_r*  VCXO_c* SCC WPR RTM
==============================================================================
   0 T1E1 EABA3233    1      ---   0x0009       80     2048   0   0 HUB
   1 SERL EABA5190    0      ---   0x0004       80     2048   8 --- SPK
   3 SERL 00009515    3   0x0104   0x001f       75     1831  24 --- SPK
   4 T1E1 00002293    0   0x0005   0x0032       80     2048  32   0 ---
==============================================================================

[root@ctp_149:~ 11]# sb

>>>>> Circuit Emulation Bundles <<<<<
Bndl BndlTyp    Port      TS         RemAddr     CID    LCID RunState RCtr
==========================================================================
   0 CESoPSN  te-0/0    2-25   10.216.118.89    1000     N/A  RUNNING    0
==========================================================================
Checked out PPS - All Bundles: 200, System Maximum: 12500
   (1 PPS = full duplex packet transfer, Bundle <---> IP network)
[root@ctp_149:~ 12]# 
[root@ctp_149:~ 20]# qb 0


########### Bundle 0 type  CESoPSN ############
----- Port te-0/0 Database -----
Port Desc:
Port Type:           E1
Line Coding:         HDB3
Port Frame:          Framed
Framing:             CCS
Clock Config:        CTP is Clock Source
Signaling:           CCS
########## Port te-0/0 Runtime Config ##########
Port Desc:
Serial Loop:         To NET
T1E1 flags:          No_Alarm

--------- Bundle 0 Config ---------
DBase State:         ACTIVE
TimeSlots:           2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Remote Addr:         10.216.118.89
Source UDP Port:     1000
Hairpin Rem UDP port:0
Packet size:         960
IP Hdr TOS:          0 (decimal)
IP Hdr TTL:          255 (decimal)
Buf Max/Set/Min(ms): 15.000/10.000/5.000
Bndl Desc:
Adaptive Primary:     NO
Bndl Config Flags:   ---
Bundle Signaling:    Off

--------- Bundle 0 State ----------
Runtime State:      RUNNING

Checked out PPS:     Bndl: 200, All Bndl: 200, Sys Max: 12500

--------- Bundle 0 Counters -------
I/F bound packets:   152432
NET bound packets:   152434
LOF Occurence:       0
Late pkts:           0
Missing pkts:        0
Buffer restarts:     0
Buffer underflows:   0
Buffer overflows:    0
Buffer starves:      0
Buffer max samples:  200
Buff Max/Avg/Min:    10.26/10.01/9.78
Buff Last Minute:    10.27/10.02/9.76
Last counter clear:  0wk, 0d, 0h, 12m, 42s
[root@ctp_149:~ 21]# 
[root@ctp_149:~ 21]# t

Mar  8 05:43:29 ctp_149 ctpd: 9      util_prt_bsc:  B0 St Chg: DISABLD to InSYNC
Mar  8 05:43:30 ctp_149 ctpd: 9      util_prt_bsc:  B0 St Chg: InSYNC to RUNNING
Mar  8 05:43:30 ctp_149 ctpd: 7 ctp_timer_proc_t1card: te-0/0  T1/E1 LOS state changed to 1#012
Mar  8 05:43:36 ctp_149 ctpd: 7 ctp_timer_proc_t1card: te-0/0  T1/E1 LOS state changed to 0#012
Mar  8 05:44:18 ctp_149 kernel:EXT4-fs (nvme0n1p7): re-mounted. Opts: (null)
Mar  8 05:44:27 ctp_149 kernel:EXT4-fs (nvme0n1p7): re-mounted. Opts: (null)


Hairpin CESoPSN bundle-

[root@ctp_89:~ 32]# sb

>>>>> Circuit Emulation Bundles <<<<<
Bndl BndlTyp    Port      TS         RemAddr     CID    LCID RunState RCtr
==========================================================================
   0 CESoPSN  te-0/0    1-24  10.216.118.149    1000     N/A  RUNNING    0
   1 CESoPSN  te-0/1    1-24   10.216.118.89    1001     N/A  RUNNING    0
   2 CESoPSN  te-0/2    2-25   10.216.118.89    1002     N/A  RUNNING    0
==========================================================================
Checked out PPS - All Bundles: 600, System Maximum: 12500
   (1 PPS = full duplex packet transfer, Bundle <---> IP network)
[root@ctp_89:~ 33]# qb 1


########### Bundle 1 type  CESoPSN ############
----- Port te-0/1 Database -----
Port Desc:
Port Type:           T1
Line Coding:         B8ZS
Port Frame:          Framed
Framing:             ESF
Clock Config:        CTP is Clock Source
BuildOut:            ~133 ft
Signaling:           Off
########## Port te-0/1 Runtime Config ##########
Port Desc:
Serial Loop:         To NET
T1E1 flags:          No_Alarm

--------- Bundle 1 Config ---------
DBase State:         ACTIVE
TimeSlots:           1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Remote Addr:         10.216.118.89
Source UDP Port:     1001
Hairpin Rem UDP port:1002
Packet size:         960
IP Hdr TOS:          0 (decimal)
IP Hdr TTL:          255 (decimal)
Buf Max/Set/Min(ms): 15.000/10.000/5.000
Bndl Desc:
Adaptive Primary:     NO
Bndl Config Flags:   ---
Bundle Signaling:    Off

--------- Bundle 1 State ----------
Runtime State:      RUNNING

Checked out PPS:     Bndl: 200, All Bndl: 600, Sys Max: 12500

--------- Bundle 1 Counters -------
I/F bound packets:   125288
NET bound packets:   125291
LOF Occurence:       0
Late pkts:           0
Missing pkts:        0
Buffer restarts:     0
Buffer underflows:   0
Buffer overflows:    0
Buffer starves:      0
Buffer max samples:  200
Buff Max/Avg/Min:    10.11/9.98/9.82
Buff Last Minute:    10.11/9.97/9.83
Last counter clear:  0wk, 0d, 0h, 10m, 27s
[root@ctp_89:~ 34]# qb 2


########### Bundle 2 type  CESoPSN ############
----- Port te-0/2 Database -----
Port Desc:
Port Type:           E1
Line Coding:         HDB3
Port Frame:          Framed
Framing:             CCS
Clock Config:        CTP is Clock Source
Signaling:           CCS
########## Port te-0/2 Runtime Config ##########
Port Desc:
Serial Loop:         To NET
T1E1 flags:          No_Alarm

--------- Bundle 2 Config ---------
DBase State:         ACTIVE
TimeSlots:           2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Remote Addr:         10.216.118.89
Source UDP Port:     1002
Hairpin Rem UDP port:1001
Packet size:         960
IP Hdr TOS:          0 (decimal)
IP Hdr TTL:          255 (decimal)
Buf Max/Set/Min(ms): 15.000/10.000/5.000
Bndl Desc:
Adaptive Primary:     NO
Bndl Config Flags:   ---
Bundle Signaling:    Off

--------- Bundle 2 State ----------
Runtime State:      RUNNING

Checked out PPS:     Bndl: 200, All Bndl: 600, Sys Max: 12500

--------- Bundle 2 Counters -------
I/F bound packets:   125136
NET bound packets:   125140
LOF Occurence:       0
Late pkts:           0
Missing pkts:        0
Buffer restarts:     0
Buffer underflows:   0
Buffer overflows:    0
Buffer starves:      0
Buffer max samples:  200
Buff Max/Avg/Min:    10.02/9.88/9.84
Buff Last Minute:    10.05/9.88/9.76
Last counter clear:  0wk, 0d, 0h, 10m, 25s
[root@ctp_89:~ 35]#
image

Note:

BITS input is a T1/E1 line interface unit (LIU), with AMI (alternate mark inversion) encoding enabled and B8ZS/HDB3 (Zero Suppression) disabled. The equalization is set for a 0-133 feet cable. An internal 100 ohm termination is present, although it might need to be externally augmented based on the type of cabling used. Any valid AMI signal works properly and it is not restricted to only the "all 1" BITS signal but the ones density must be sufficient to prevent LOS (according to the ITU G.775 recommendation). The TTL input has a slice point of 3.3V/2 = 1.65V relative to chassis ground (GND). Therefore, any signal on the coaxial center conductor that transitions through that voltage registers a transition. There are many signals, besides TTL, that satisfy this criteria. An external termination must be provided that matches the impedance of the cable that goes to the BNC connector.

If you can configure the rate in CTP menu, then the TTL supports a frequency of 2048 KHz for the TTL clock input, provided the signal is good and noise-free (terminated properly). TTL is rate-agile, while BITS is restricted to T1/E1 frequencies.

The TTL input is high-impedance (no on-board termination provided) because a variety of cable types might exist that you can use to drive signal to this connector, such as RG-58 coax (50 ohm), RG-59 coax (75 ohm), or twisted pair (100-120 ohm). Instead of applying a particular impedance termination on the board and have it incorrectly done, we recommend that you configure the impedance termination based on your network environment. For example, a 50 ohm termination is needed if you are using RG-58/U coax cable, which has 50 ohm impedance.

Table 1: CESoPSN Bundle T1/E1 Port Parameter Settings in the CTP Menu
Field	Function	Your Action
Port descriptor	Specifies a description for the port.	Enter a description of up to 62 alphanumeric characters. Do not use the following characters: ( ; ' " ) ]
Type	Specifies the type of interface. The type of interface that you select affects the default packet size and buffer sizes for the bundle.	Select one: T1 E1
Option (for T1)	Specifies the T1 encoding method used on this bundle.	Select one: B8ZS AMI
Option (for E1)	For E1 interfaces, the termination is configured to work with HDB3.
BuildOut	For T1 interfaces, specifies the line buildout.	Select one: 0) ~133 ft 1) ~266 ft 2) ~399 ft 3) ~533 ft 4) ~655 ft 5) -7.5dB CSU 6) -15dB CSU 7) -22.5dB CSU
Frame Mode (for T1 )	Specifies the frame format to be used for T1 interfaces.	Select one: ESF D4
Clock synthesizer	The following clock synthesizer settings are set by the software, and you cannot change them: For T1, the clock synthesizer is set to 1544 KHz. For E1 the clock synthesizer is set to 2048 KHz.
Clock Config	Specifies the type of clocking for the port.	Select one: CTP is Clock Source—The PBX either returns the clock received from the CTP or it returns a clock that is traceable to the same source as the CTP node clock reference. You typically use this configuration when you configure the CTP device with a clock reference input. CTP is Loop Timed—The PBX provides the clock and the CTP returns the same clock to the PBX. You typically use this configuration when the PBX has the more accurate clock source. You can configure the far end of the circuit with adaptive clocking to recover this clock if necessary. CTP is Clock Source (Adaptive End)—The PBX returns the clock received from the CTP, and the CTP uses the adaptive recovered clock. You typically use this configuration when the CTP does not have a reference input and the PBX typically requires clock from the distant PBX. On CTP150 devices, If you set clocking to `CTP is Clock Source (Adaptive End)`, the first bundle activated on the interface is assigned as the adaptive master bundle on which the transmit clock is adjusted. This bundle is also the last bundle to be deactivated on the interface.
Signal	For T1 interfaces, specifies whether or not CAS signaling is used. E1 interfaces support both CCS and CAS.	For T1 interfaces, select one: On—Signaling is on. Off—Signaling is off. For E1 interfaces, select one: CCS CAS

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Using CESoPSN Bundles to Group DS0s on IP Circuits

Configuring T1 Port to E1 Port for CESoPSN Bundles (CTP Menu)

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