Here the way we got it to work in SBC/Southwestern Bell country. Please feel free to ask if you have any questions:
ORDERING E&M TIE TRUNKS
FOR NORSTAR MICS
IN SBC/SOUTHWESTERN BELL TERRITORY
Ordering the circuits
v You need to order one 8-wire circuit for every port to be used on the E&M card.
v Require the following installation from the phone company:
Ø Specify both locations as Location A (the main site, or master site), and Location Z (the remote site or slave site) with physical service addresses
Ø Order E&M Tie Trunk Type II 424. They call this a ‘4-wire’ circuit referring to the number of cables at the demark. Type II, however, refers to the 8-wires at the Teltrend box and the punch down block breaking out of it (see below) for all the signal leads necessary. The Norstar E&M cards need all 8 wires / signals in the exact sequence as below to work.
Ø Interface needs to be RJ2HX. This is very important, double-check the interface and the number of wires as soon as you get there. This is North American standard interface. If necessary, force the phone company to abide to its own specifications
Ø Facility Interface Code (FIC) TL32M
Ø One Teltrend box Model 4305 Issue 2 with toggle switches set to:
§ Type II
§ DX1,
§ Normal polarity
Ø 8-wire (4-pair) with this lead pin out on the blocks at both locations:
§ White T
§ Blue R
§ White T1
§ Orange R1
§ White E
§ Green SG
§ White M
§ Brown SB
Ø The distribution blocks should be punched down exactly the same as per color code at both locations
Setting up the Norstar
From the E&M card on the trunk module, punch down a 4-pair cable the same sequence as above. Once the circuit is in, cross-connect the leads from the phone company’s block to yours straight through one by one, so that the color code should match the signal sequence, that is white/blue = T R, white/orange = T1 R1, white/green = E SG, white/brown = M SB.
Both sites need to be wired the same straight through way, and then the Teltrend box will do the battery reversal.
Program the Norstar MICS as per manual instructions. When the circuits are good, you should get a stuttered dial tone once you dial the access code.
If you do not get the stuttered dial tone, listen to whether the system clicks trying to seize the circuit. If it does, but there’s still dead air, the problem is on the circuit.
If it says something like ‘no lines available’ although you know nobody is on, look at the Teltrend box and see if the E and M lead lights are on, blinking or cycling through. They should be off if installed correctly, and should only light up when the request for service comes from the phone system (access code). If they are on or blinking or cycling, have the phone company check and correct the signal leads for reversal on site.
Request a vendor meet with 2 phone company technicians and troubleshoot with them present. Do not let them go until it’s done.
This is not a very common circuit, so the phone company may have a little difficulty understanding what needs to be done.
Below a link to a standards glossary:
darnold@americaii.com